{"id":4489,"date":"2026-06-09T11:59:41","date_gmt":"2026-06-09T03:59:41","guid":{"rendered":"https:\/\/collagensei.com\/?p=4489"},"modified":"2026-06-09T11:59:44","modified_gmt":"2026-06-09T03:59:44","slug":"huile-donagre-pour-les-cheveux","status":"publish","type":"post","link":"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/","title":{"rendered":"Evening Primrose Oil for Hair: GLA, Scalp Support &amp; Supplement Formulation Guide"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title ez-toc-toggle\" style=\"cursor:pointer\">Table des mati\u00e8res<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table des mati\u00e8res\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#Quick_Answer_Is_evening_primrose_oil_good_for_hair\" >Quick Answer: Is evening primrose oil good for hair?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#What_is_Evening_Primrose_Oil\" >Qu'est-ce que l'huile d'onagre ?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#Evening_Primrose_Vs_Common_Primrose\" >Onagre Vs. Onagre commune<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#What_evening_primrose_oil_can_and_cannot_do_for_hair\" >What evening primrose oil can and cannot do for hair<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#Evening_Primrose_Oil_Dosage_for_Hair_Loss\" >Dosage de l'huile d'onagre pour la chute des cheveux<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#Oral_softgels_vs_topical_hair_oils_Which_format_makes_more_sense\" >Oral softgels vs topical hair oils: Which format makes more sense?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#How_to_Use_Evening_Primrose_Oil_for_Hair\" >Comment utiliser l'huile d'onagre pour les cheveux<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#Safety_and_Side_Effects_of_Evening_Primrose_Oil\" >S\u00e9curit\u00e9 et effets secondaires de l'huile d'onagre<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#B2B_formulation_notes_for_evening_primrose_oil_hair_products\" >B2B formulation notes for evening primrose oil hair products<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#When_to_Seek_Professional_Help\" >Quand demander l'aide d'un professionnel<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#Scientific_Evidence_and_Limitations\" >Preuves et limites scientifiques<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#Conclusion_How_brands_should_use_evening_primrose_oil_for_hair_products\" >Conclusion: How brands should use evening primrose oil for hair products<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#Need_help_developing_an_EPO_hair-support_product\" >Need help developing an EPO hair-support product?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#FAQs\" >FAQ<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#Does_evening_primrose_oil_thicken_hair\" >Does evening primrose oil thicken hair?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#Can_evening_primrose_oil_regrow_hair\" >Can evening primrose oil regrow hair?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#Is_evening_primrose_oil_better_as_a_capsule_or_topical_oil\" >Is evening primrose oil better as a capsule or topical oil?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#Does_evening_primrose_oil_contain_biotin\" >Does evening primrose oil contain biotin?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#What_should_brands_check_before_sourcing_evening_primrose_oil\" >What should brands check before sourcing evening primrose oil?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#Can_an_EPO_supplement_claim_to_treat_hair_loss\" >Can an EPO supplement claim to treat hair loss?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#What_is_the_best_dosage_form_for_private_label_EPO_hair_products\" >What is the best dosage form for private label EPO hair products?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#Who_should_avoid_evening_primrose_oil\" >Who should avoid evening primrose oil?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/collagensei.com\/fr\/evening-primrose-oil-for-hair\/#References\" >R\u00e9f\u00e9rences<\/a><\/li><\/ul><\/nav><\/div>\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Quick_Answer_Is_evening_primrose_oil_good_for_hair\"><\/span>Quick Answer: Is evening primrose oil good for hair?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"wp-block-uagb-image uagb-block-3ace4a39 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-hair-support-softgel.webp ,https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-hair-support-softgel.webp 780w, https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-hair-support-softgel.webp 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-hair-support-softgel.webp\" alt=\"Evening primrose oil for hair support softgel formulation\" class=\"uag-image-20900\" width=\"1000\" height=\"545\" title=\"evening-primrose-oil-hair-support-softgel\" role=\"img\"\/><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Evening primrose oil (EPO) is a plant seed oil naturally rich in gamma-linolenic acid (GLA), an omega-6 fatty acid used in skin, scalp, and beauty-from-within supplement positioning. For hair-focused products, EPO is best understood as a scalp-support and fatty-acid ingredient, not a guaranteed hair regrowth treatment.<br><br>For consumers, EPO may help support a healthier scalp environment, especially when dryness, irritation, or poor fatty-acid intake is part of the concern. However, it should not be presented as a cure for hair loss, alopecia, or hormonal hair thinning.<br><br>For supplement brands, EPO is more valuable as a formulation ingredient for hair-support softgels, beauty supplements, women\u2019s wellness products, and scalp-care oil blends. The key is to verify GLA content, oxidation status, extraction method, COA quality, packaging protection, and claim language before turning it into a finished product.<\/p>\n\n\n\nIf your brand is comparing EPO with biotin, collagen, zinc, or other beauty ingredients, <a href=\"\/fr\/fabricant-de-complements-alimentaires-sur-mesure\/\" target=\"_blank\" rel=\"noopener\">formulation de compl\u00e9ments sur mesure<\/a> support can help match the ingredient system with realistic claims and dosage forms.\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_Evening_Primrose_Oil\"><\/span>Qu'est-ce que l'huile d'onagre ?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Soir\u00e9e <a class=\"wpil_keyword_link\" href=\"https:\/\/collagensei.com\/fr\/la-legendaire-huile-donagre-est-elle-vraiment-utile\/\" target=\"_blank\"  rel=\"noopener\" title=\"L&#039;huile d&#039;onagre l\u00e9gendaire, est-elle vraiment utile ?\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2969\">huile de primev\u00e8re<\/a> is extracted from the seeds of Oenothera biennis. Its main nutritional value comes from linoleic acid and gamma-linolenic acid (GLA), a fatty acid often used in skin-barrier, scalp-comfort, and women\u2019s wellness formulations.<br><br>In supplement manufacturing, EPO is usually supplied as a liquid oil for softgel filling or as an ingredient in topical oil blends. A high-quality EPO ingredient should disclose its GLA percentage, extraction method, peroxide value, acid value, country of origin, storage conditions, and COA results.<br><br>For hair-focused products, the question is not simply whether EPO is \u201cgood for hair.\u201d The more useful question is whether the oil is standardized, stable, properly packaged, and positioned with realistic claims.<\/p>\n\n\n\n<div class=\"wp-block-uagb-image uagb-block-ec2ae13c wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/gla-scalp-barrier-hair-support.webp ,https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/gla-scalp-barrier-hair-support.webp 780w, https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/gla-scalp-barrier-hair-support.webp 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/gla-scalp-barrier-hair-support.webp\" alt=\"GLA scalp barrier and hair support mechanism\" class=\"uag-image-20902\" width=\"1000\" height=\"545\" title=\"gla-scalp-barrier-hair-support\" role=\"img\"\/><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Evening_Primrose_Vs_Common_Primrose\"><\/span>Onagre Vs. Onagre commune<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Evening primrose (Oenothera biennis) and common primrose (Primula vulgaris) are different plants, often confused due to similar names. Evening primrose is a tall, biennial plant with yellow flowers that open in the evening. Its seeds are pressed to make EPO, rich in GLA. Common primrose, a low-growing perennial with pale yellow or pink flowers, is mostly ornamental and not used for oil production. While common primrose has some traditional medicinal uses (e.g., for coughs), it lacks the GLA content that makes EPO valuable for hair health. Always check product labels to ensure you\u2019re getting evening <a class=\"wpil_keyword_link\" href=\"https:\/\/collagensei.com\/fr\/huile-donagre-vs-huile-dalgue-dha-apercu-comparatif\/\" target=\"_blank\"  rel=\"noopener\" title=\"Huile d&#039;onagre vs huile d&#039;algue DHA : Un aper\u00e7u comparatif\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2970\">huile de primev\u00e8re<\/a>, not a common primrose extract.<\/p>\n\n\n\nFor botanical and seed-oil products, <a href=\"\/fr\/fabrication-de-complements-alimentaires-a-base-de-plantes\/\" target=\"_blank\" rel=\"noopener\">fabrication de compl\u00e9ments alimentaires \u00e0 base de plantes<\/a> expertise can help brands manage ingredient identity, sourcing, and quality documentation.\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_evening_primrose_oil_can_and_cannot_do_for_hair\"><\/span>What evening primrose oil can and cannot do for hair<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Evening primrose oil may support hair and scalp health indirectly by helping maintain fatty-acid intake and supporting skin and scalp barrier function. Because the scalp is skin, ingredients that support skin comfort and moisture can be relevant to hair-care positioning.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">What EPO may support:<br>&#8211; scalp moisture and comfort,<br>&#8211; healthy-looking hair positioning,<br>&#8211; beauty-from-within formulas,<br>&#8211; fatty-acid support for skin and scalp,<br>&#8211; women\u2019s wellness supplement concepts.<br><br>What EPO should not be claimed to do:<br>&#8211; cure hair loss,<br>&#8211; reverse androgenetic alopecia,<br>&#8211; treat alopecia areata,<br>&#8211; block DHT as a drug-like mechanism,<br>&#8211; regrow hair in users with medical hair-loss conditions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This distinction is important. A hair-support supplement can be positioned around scalp comfort, skin barrier support, beauty-from-within, and healthy hair appearance. It should not be marketed as a treatment for medical hair loss unless supported by appropriate regulatory approval and clinical evidence.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Evening_Primrose_Oil_Dosage_for_Hair_Loss\"><\/span>Dosage de l'huile d'onagre pour la chute des cheveux<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le bon dosage de l'huile d'onagre d\u00e9pend de la prise orale ou de l'application sur le cuir chevelu. Pour les suppl\u00e9ments oraux, la dose courante est de 500 \u00e0 1 000 mg par jour, avec des capsules normalis\u00e9es pour contenir 8-10% GLA. Commencez par une dose plus faible, comme 500 mg, et augmentez-la si n\u00e9cessaire. Prenez l'EPO avec de la nourriture pour am\u00e9liorer l'absorption et r\u00e9duire les maux d'estomac. La constance est essentielle - les r\u00e9sultats peuvent prendre 2 \u00e0 3 mois avant de se manifester.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour un usage topique, m\u00e9langez quelques gouttes d'EPO \u00e0 une huile de support comme l'huile de noix de coco ou de jojoba. Appliquez-le sur votre cuir chevelu 2 \u00e0 3 fois par semaine, en massant doucement pour stimuler la circulation. Laissez agir pendant 30 minutes ou toute la nuit avant de vous laver. Certains produits capillaires contiennent d\u00e9j\u00e0 de l'EPO, v\u00e9rifiez donc les \u00e9tiquettes pour \u00e9viter d'en abuser.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Consultez toujours un m\u00e9decin avant de commencer \u00e0 prendre de l'EPO, surtout si vous avez des probl\u00e8mes de sant\u00e9 ou si vous prenez des m\u00e9dicaments. Il pourra vous recommander un dosage adapt\u00e9 \u00e0 vos besoins, en particulier si la perte de cheveux est li\u00e9e \u00e0 des probl\u00e8mes hormonaux ou m\u00e9dicaux.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Oral_softgels_vs_topical_hair_oils_Which_format_makes_more_sense\"><\/span>Oral softgels vs topical hair oils: Which format makes more sense?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<div class=\"wp-block-uagb-image uagb-block-e5715daf wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/epo-softgel-vs-topical-hair-oil.webp ,https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/epo-softgel-vs-topical-hair-oil.webp 780w, https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/epo-softgel-vs-topical-hair-oil.webp 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/epo-softgel-vs-topical-hair-oil.webp\" alt=\"Evening primrose oil softgel vs topical hair oil comparison\" class=\"uag-image-20908\" width=\"1000\" height=\"545\" title=\"epo-softgel-vs-topical-hair-oil\" role=\"img\"\/><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Evening primrose oil can appear in two different product formats: oral supplements and topical scalp oils. These two formats should not be treated as the same product.<br><br>Oral EPO softgels are better suited for beauty-from-within, women\u2019s wellness, and fatty-acid support positioning. They are easier to dose, easier to package, and more familiar to supplement consumers.<br><br>Topical EPO oils are better suited for scalp comfort, hair-care routines, and cosmetic positioning. However, topical oils require different formulation work, including carrier oil selection, fragrance compatibility, skin feel, viscosity, oxidation control, and preservative or packaging considerations.<br><br>For brands, the choice depends on the business model. A dietary supplement brand may prefer EPO softgels. A hair-care brand may prefer a scalp oil blend. A hybrid beauty brand may use both: an oral softgel plus a topical hair oil as a bundled routine.<\/p>\n\n\n\nFor brands developing oral EPO hair-support products, <a href=\"\/fr\/fabricant-de-capsules-molles\/\" target=\"_blank\" rel=\"noopener\">softgel capsule manufacturing<\/a> is often the most practical format for oil protection, precise dosage, and retail-ready presentation.\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_to_Use_Evening_Primrose_Oil_for_Hair\"><\/span>Comment utiliser l'huile d'onagre pour les cheveux<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Using evening primrose oil is easy and can fit into your daily routine. For oral use, take capsules with a meal to help absorption. Pair EPO with other hair-supporting nutrients like biotin, zinc, or <a class=\"wpil_keyword_link\" href=\"https:\/\/collagensei.com\/fr\/fournisseur-de-vitamines\/fabricant-de-vitamine-d\/\" target=\"_blank\" rel=\"noopener\" title=\"Fabricant de vitamine D\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"2635\">vitamine D<\/a> for better results. A diet rich in fruits, vegetables, and healthy fats also boosts hair health.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour une utilisation topique, essayez un traitement du cuir chevelu fait maison. M\u00e9langez 5 \u00e0 10 gouttes d'EPO avec une cuill\u00e8re \u00e0 soupe d'huile de support (noix de coco, jojoba ou amande). Massez votre cuir chevelu en insistant sur les zones clairsem\u00e9es ou s\u00e8ches. Laissez reposer pendant 30 \u00e0 60 minutes, ou toute la nuit pour une nutrition plus profonde, puis proc\u00e9dez au shampooing habituel. Vous pouvez \u00e9galement ajouter quelques gouttes d'EPO \u00e0 votre apr\u00e8s-shampooing pour une hydratation suppl\u00e9mentaire.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pour obtenir les meilleurs r\u00e9sultats, utilisez l'EPO de mani\u00e8re r\u00e9guli\u00e8re. Associez-la \u00e0 des pratiques de soins capillaires doux, en \u00e9vitant par exemple les shampooings agressifs ou le coiffage \u00e0 la chaleur. Une approche holistique - bonne nutrition, gestion du stress et soins r\u00e9guliers du cuir chevelu - maximisera les bienfaits de l'EPO.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Safety_and_Side_Effects_of_Evening_Primrose_Oil\"><\/span>S\u00e9curit\u00e9 et effets secondaires de l'huile d'onagre<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L'huile d'onagre est g\u00e9n\u00e9ralement sans danger pour la plupart des gens, mais des effets secondaires peuvent survenir. Les effets secondaires les plus courants sont de l\u00e9gers maux d'estomac, des naus\u00e9es ou des maux de t\u00eate. La prise d'EPO avec de la nourriture peut r\u00e9duire ces probl\u00e8mes. Dans de rares cas, l'huile d'onagre peut provoquer des r\u00e9actions allergiques, comme des \u00e9ruptions cutan\u00e9es. Arr\u00eatez de l'utiliser si cela se produit.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L'EPO peut interagir avec certains m\u00e9dicaments, y compris les anticoagulants (par exemple, la warfarine) et les m\u00e9dicaments contre l'\u00e9pilepsie (par exemple, la ph\u00e9nyto\u00efne). Elle peut \u00e9galement augmenter le risque de saignement, il faut donc l'\u00e9viter avant une intervention chirurgicale. Les femmes enceintes ou allaitantes ne doivent utiliser l'EPO que sous contr\u00f4le m\u00e9dical, car elle peut affecter les hormones.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Choisissez une EPO de haute qualit\u00e9 pour \u00e9viter les contaminants. Recherchez des produits dont la puret\u00e9 et l'efficacit\u00e9 ont \u00e9t\u00e9 test\u00e9es par une tierce partie. Les fabricants de suppl\u00e9ments \u00e0 faible quantit\u00e9 de commande (MOQ) peuvent proposer des formulations personnalis\u00e9es de haute qualit\u00e9 pour des besoins sp\u00e9cifiques. Respectez toujours les consignes de dosage et consultez un m\u00e9decin en cas de doute.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"B2B_formulation_notes_for_evening_primrose_oil_hair_products\"><\/span>B2B formulation notes for evening primrose oil hair products<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For supplement brands, evening primrose oil is not difficult to understand as an ingredient, but it does require careful handling as an oil-based raw material.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Before purchasing EPO for a hair-support formula, request:<br>&#8211; GLA percentage,<br>&#8211; peroxide value,<br>&#8211; acid value,<br>&#8211; extraction method,<br>&#8211; COA and specification sheet,<br>&#8211; allergen statement,<br>&#8211; pesticide or solvent testing if applicable,<br>&#8211; country of origin,<br>&#8211; recommended storage temperature,<br>&#8211; and shelf-life data.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For softgel products, brands should also evaluate capsule size, fill weight, gelatin vs vegetarian shell compatibility, leakage risk, antioxidant system, and packaging protection from heat, light, and oxygen.<br><br>For topical scalp oils, brands should evaluate skin feel, carrier oil compatibility, fragrance system, oxidation risk, dropper or pump packaging, and whether the product should be positioned as a cosmetic rather than a dietary supplement.<\/p>\n\n\n\n<div class=\"wp-block-uagb-image uagb-block-3b6b31f8 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-coa-quality-testing.webp ,https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-coa-quality-testing.webp 780w, https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-coa-quality-testing.webp 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-coa-quality-testing.webp\" alt=\"Evening primrose oil COA quality testing for GLA peroxide value and acid value\" class=\"uag-image-20915\" width=\"1000\" height=\"545\" title=\"evening-primrose-oil-coa-quality-testing\" role=\"img\"\/><\/figure><\/div>\n\n\n\nUne approche structur\u00e9e <a href=\"\/fr\/controle-de-la-qualite-des-complements-alimentaires\/\" target=\"_blank\" rel=\"noopener\">contr\u00f4le de la qualit\u00e9 des compl\u00e9ments alimentaires<\/a> review can help verify GLA content, peroxide value, acid value, COA documentation, and finished-product stability.\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"When_to_Seek_Professional_Help\"><\/span>Quand demander l'aide d'un professionnel<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L'huile d'onagre peut contribuer \u00e0 la sant\u00e9 des cheveux, mais ce n'est pas un rem\u00e8de contre la chute des cheveux. Si vous constatez une perte de cheveux soudaine ou importante, une calvitie parcellaire ou des douleurs au niveau du cuir chevelu, consultez un m\u00e9decin ou un dermatologue. Ces sympt\u00f4mes peuvent \u00eatre le signe de troubles de la thyro\u00efde, d'une carence en fer ou de maladies auto-immunes, qui n\u00e9cessitent un traitement m\u00e9dical.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un professionnel peut \u00e9galement tester les carences en nutriments ou les d\u00e9s\u00e9quilibres hormonaux \u00e0 l'origine des probl\u00e8mes capillaires. Si l'EPO ou d'autres rem\u00e8des n'am\u00e9liorent pas vos cheveux apr\u00e8s 3 \u00e0 6 mois, un m\u00e9decin peut recommander des traitements plus puissants, comme le minoxidil ou l'hormonoth\u00e9rapie. Ne comptez pas uniquement sur les suppl\u00e9ments si votre perte de cheveux affecte votre qualit\u00e9 de vie.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Scientific_Evidence_and_Limitations\"><\/span>Preuves et limites scientifiques<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The evidence for evening primrose oil and hair growth is limited. Some studies on fatty acids and antioxidant combinations have reported improvements in hair density or shedding-related outcomes, but these formulas often include multiple nutrients rather than EPO alone. That means the results should not be interpreted as proof that evening primrose oil by itself regrows hair.<br><br>The strongest support for EPO is its role as a source of GLA and its relevance to skin and scalp barrier positioning. This makes it useful for beauty-from-within and scalp-comfort formulas, but not a standalone solution for medical hair loss.<br><br>For content and product claims, the safest approach is to describe EPO as supporting scalp comfort, skin barrier function, and healthy-looking hair, while clearly stating that users with sudden, severe, patchy, or persistent hair loss should consult a healthcare professional.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion_How_brands_should_use_evening_primrose_oil_for_hair_products\"><\/span>Conclusion: How brands should use evening primrose oil for hair products<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Evening primrose oil can be a useful ingredient for hair-support and beauty-from-within products, but it should be positioned carefully. Its value comes from GLA and fatty-acid support, not from a guaranteed hair-regrowth effect.<br><br>For consumers, EPO may be considered as part of a broader scalp and beauty routine. For brands, EPO is more interesting as a softgel, scalp oil, or women\u2019s beauty supplement ingredient when the formula is supported by strong COA documentation, oxidation control, appropriate packaging, and realistic claim language.<\/p>\n\n\n\n<div class=\"wp-block-uagb-image uagb-block-0cc0926d wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img loading=\"lazy\" decoding=\"async\" srcset=\"https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-softgel-manufacturing.webp ,https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-softgel-manufacturing.webp 780w, https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-softgel-manufacturing.webp 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-softgel-manufacturing.webp\" alt=\"Evening primrose oil softgel manufacturing for hair support supplements\" class=\"uag-image-20921\" width=\"1000\" height=\"545\" title=\"evening-primrose-oil-softgel-manufacturing\" role=\"img\"\/><\/figure><\/div>\n\n\n\nIf you are preparing a market-ready hair-support supplement, our <a href=\"\/fr\/supplement-personnalise-de-marque-privee\/\" target=\"_blank\" rel=\"noopener\">suppl\u00e9ments personnalis\u00e9s sous marque de distributeur<\/a> service can support formulation, manufacturing, packaging, and launch planning.\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Need_help_developing_an_EPO_hair-support_product\"><\/span>Need help developing an EPO hair-support product?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Gensei can support evening primrose oil softgels, beauty-from-within supplements, scalp oil blends, custom formulations, and private label hair-support products. Send us your target dosage form, GLA specification, packaging plan, and market positioning to review feasibility before production.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQs\"><\/span>FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Does_evening_primrose_oil_thicken_hair\"><\/span>Does evening primrose oil thicken hair?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Evening primrose oil should not be claimed to directly thicken hair. It may support scalp comfort, fatty-acid intake, and healthy-looking hair positioning, but it is not a proven hair-thickening treatment.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_evening_primrose_oil_regrow_hair\"><\/span>Can evening primrose oil regrow hair?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">There is not enough evidence to say that EPO alone regrows hair. If hair loss is caused by genetics, thyroid issues, iron deficiency, autoimmune disease, or medication, EPO is unlikely to solve the root cause. It is better positioned as a supportive beauty and scalp-health ingredient.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Is_evening_primrose_oil_better_as_a_capsule_or_topical_oil\"><\/span>Is evening primrose oil better as a capsule or topical oil?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Capsules are better for beauty-from-within and fatty-acid support positioning. Topical oils are better for scalp comfort and cosmetic hair-care routines. Brands should choose the format based on claim, packaging, target customer, and regulatory category.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Does_evening_primrose_oil_contain_biotin\"><\/span>Does evening primrose oil contain biotin?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No. Evening primrose oil does not naturally contain biotin. It is primarily valued for GLA and linoleic acid. A hair-support formula may combine EPO with biotin, zinc, vitamin D, collagen peptides, or other beauty ingredients if the combination is appropriate and substantiated.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_should_brands_check_before_sourcing_evening_primrose_oil\"><\/span>What should brands check before sourcing evening primrose oil?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Brands should check GLA content, peroxide value, acid value, extraction method, COA, country of origin, allergen statement, pesticide or solvent testing if applicable, and storage conditions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Can_an_EPO_supplement_claim_to_treat_hair_loss\"><\/span>Can an EPO supplement claim to treat hair loss?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">No. Dietary supplements should not claim to diagnose, treat, cure, or prevent hair loss or alopecia. Safer structure\/function-style language includes supports scalp comfort, supports skin barrier function, and supports healthy-looking hair.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_is_the_best_dosage_form_for_private_label_EPO_hair_products\"><\/span>What is the best dosage form for private label EPO hair products?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Softgels are usually the most practical option for dietary supplements because they protect the oil, control dose, and reduce taste issues. Topical scalp oils can work for cosmetic brands but require different stability and packaging tests.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Who_should_avoid_evening_primrose_oil\"><\/span>Who should avoid evening primrose oil?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Consumers who are pregnant or breastfeeding, taking blood thinners, preparing for surgery, or using seizure medications should consult a healthcare professional before using EPO. Brands should include appropriate caution language based on target market regulations.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"References\"><\/span>R\u00e9f\u00e9rences<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong><em>NCCIH. Evening Primrose Oil: Usefulness and Safety.<\/em><\/strong><br><a href=\"https:\/\/www.nccih.nih.gov\/health\/evening-primrose-oil\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/www.nccih.nih.gov\/health\/evening-primrose-oil<\/a><\/li>\n\n\n\n<li><strong><em>PubMed. Effect of a nutritional supplement on hair loss in women.<\/em><\/strong><br><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/25573272\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/pubmed.ncbi.nlm.nih.gov\/25573272\/<\/a><\/li>\n\n\n\n<li><strong><em>PubMed. Systemic evening primrose oil improves the biophysical skin parameters of healthy adults.<\/em><\/strong><br><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/18492193\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/pubmed.ncbi.nlm.nih.gov\/18492193\/<\/a><\/li>\n\n\n\n<li><strong><em>PMC. The role of linoleic acid in skin and hair health: A review.<\/em><\/strong><br><a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC11719646\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC11719646\/<\/a><\/li>\n\n\n\n<li><strong><em>PMC. Natural ingredients in alopecia \/ dermatologic effectiveness review.<\/em><\/strong><br><a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC10761108\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC10761108\/<\/a><\/li>\n\n\n\n<li><strong><em>FDA. All\u00e9gations relatives \u00e0 la structure et \u00e0 la fonction.<\/em><\/strong><br><a href=\"https:\/\/www.fda.gov\/food\/nutrition-food-labeling-and-critical-foods\/structurefunction-claims\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/www.fda.gov\/food\/nutrition-food-labeling-and-critical-foods\/structurefunction-claims<\/a><\/li>\n\n\n\n<li><strong><em>FDA. Questions and Answers on Dietary Supplements.<\/em><\/strong><br><a href=\"https:\/\/www.fda.gov\/food\/information-consumers-using-dietary-supplements\/questions-and-answers-dietary-supplements\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/www.fda.gov\/food\/information-consumers-using-dietary-supplements\/questions-and-answers-dietary-supplements<\/a><\/li>\n\n\n\n<li><strong><em>PMC. Skin, hair, and nail supplements: marketing and labeling concerns.<\/em><\/strong><br><a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC7802115\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC7802115\/<\/a><\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"<p>Quick Answer: Is evening primrose oil good for hair? Evening primrose oil (EPO) is a plant seed oil naturally rich [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":20900,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[312],"tags":[481,600],"class_list":["post-4489","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-evening-primrose-oil","tag-custom-supplement-formulation","tag-gla"],"uagb_featured_image_src":{"full":["https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-hair-support-softgel.webp",1000,545,false],"thumbnail":["https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-hair-support-softgel-150x150.webp",150,150,true],"medium":["https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-hair-support-softgel-300x164.webp",300,164,true],"medium_large":["https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-hair-support-softgel-768x419.webp",768,419,true],"large":["https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-hair-support-softgel.webp",1000,545,false],"1536x1536":["https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-hair-support-softgel.webp",1000,545,false],"2048x2048":["https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-hair-support-softgel.webp",1000,545,false],"trp-custom-language-flag":["https:\/\/collagensei.com\/wp-content\/uploads\/2025\/07\/evening-primrose-oil-hair-support-softgel-18x10.webp",18,10,true]},"uagb_author_info":{"display_name":"w.wenyang","author_link":"https:\/\/collagensei.com\/fr\/author\/w-wenyang\/"},"uagb_comment_info":0,"uagb_excerpt":"Quick Answer: Is evening primrose oil good for hair? Evening primrose oil (EPO) is a plant seed oil naturally rich [&hellip;]","_links":{"self":[{"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/posts\/4489","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/comments?post=4489"}],"version-history":[{"count":3,"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/posts\/4489\/revisions"}],"predecessor-version":[{"id":20924,"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/posts\/4489\/revisions\/20924"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/media\/20900"}],"wp:attachment":[{"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/media?parent=4489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/categories?post=4489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/tags?post=4489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}