{"id":3324,"date":"2026-08-18T11:14:50","date_gmt":"2026-08-18T03:14:50","guid":{"rendered":"https:\/\/collagensei.com\/?p=3324"},"modified":"2026-08-18T11:15:53","modified_gmt":"2026-08-18T03:15:53","slug":"keratine-hydrolysee-vs-proteine-de-pois","status":"publish","type":"post","link":"https:\/\/collagensei.com\/fr\/hydrolyzed-keratin-vs-pea-protein\/","title":{"rendered":"Hydrolyzed Keratin vs Hydrolyzed Pea Protein for Hair: Which Should Formulators Choose?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 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\/hydrolyzed-keratin-vs-pea-protein\/#Hydrolyzed_Keratin_vs_Pea_Protein_for_Hair_Core_Differences\" >Hydrolyzed Keratin vs Pea Protein for Hair: Core Differences<\/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\/hydrolyzed-keratin-vs-pea-protein\/#What_Is_Hydrolyzed_Keratin\" >What Is Hydrolyzed Keratin?<\/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\/hydrolyzed-keratin-vs-pea-protein\/#What_Is_Hydrolyzed_Pea_Protein\" >What Is Hydrolyzed Pea Protein?<\/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\/hydrolyzed-keratin-vs-pea-protein\/#Hydrolyzed_Pea_Protein_vs_Pea_Protein_Isolate_Why_the_Difference_Matters\" >Hydrolyzed Pea Protein vs Pea Protein Isolate: Why the Difference Matters<\/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\/hydrolyzed-keratin-vs-pea-protein\/#Which_Is_Better_for_Hair_Hydrolyzed_Keratin_or_Hydrolyzed_Pea_Protein\" >Which Is Better for Hair: Hydrolyzed Keratin or Hydrolyzed Pea Protein?<\/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\/hydrolyzed-keratin-vs-pea-protein\/#How_Hydrolyzed_Proteins_Interact_With_Hair\" >How Hydrolyzed Proteins Interact With Hair<\/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\/hydrolyzed-keratin-vs-pea-protein\/#Is_Hydrolyzed_Keratin_Vegan\" >Is Hydrolyzed Keratin Vegan?<\/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\/hydrolyzed-keratin-vs-pea-protein\/#Vegetable_Keratin_vs_Animal_Keratin_What_Does_%E2%80%9CVegetable_Keratin%E2%80%9D_Mean\" >Vegetable Keratin vs Animal Keratin: What Does \u201cVegetable Keratin\u201d Mean?<\/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\/hydrolyzed-keratin-vs-pea-protein\/#Does_Hydrolyzed_Pea_Protein_Help_Hair_Growth\" >Does Hydrolyzed Pea Protein Help Hair Growth?<\/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\/hydrolyzed-keratin-vs-pea-protein\/#Can_Hydrolyzed_Keratin_and_Hydrolyzed_Pea_Protein_Be_Used_Together\" >Can Hydrolyzed Keratin and Hydrolyzed Pea Protein Be Used Together?<\/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\/hydrolyzed-keratin-vs-pea-protein\/#Which_Ingredient_Fits_Each_Hair-Care_Product_Format\" >Which Ingredient Fits Each Hair-Care Product Format?<\/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\/hydrolyzed-keratin-vs-pea-protein\/#B2B_Quality_Specifications_to_Request\" >B2B Quality Specifications to Request<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/collagensei.com\/fr\/hydrolyzed-keratin-vs-pea-protein\/#Safety_and_Claim_Considerations\" >Safety and Claim Considerations<\/a><\/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\/hydrolyzed-keratin-vs-pea-protein\/#FAQ\" >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\/hydrolyzed-keratin-vs-pea-protein\/#Is_hydrolyzed_pea_protein_good_for_hair\" >Is hydrolyzed pea protein good for 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\/hydrolyzed-keratin-vs-pea-protein\/#Is_pea_protein_good_for_hair\" >Is pea protein good for 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\/hydrolyzed-keratin-vs-pea-protein\/#Is_hydrolyzed_keratin_good_for_hair\" >Is hydrolyzed keratin good for hair?<\/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\/hydrolyzed-keratin-vs-pea-protein\/#Is_hydrolyzed_keratin_vegan\" >Is hydrolyzed keratin vegan?<\/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\/hydrolyzed-keratin-vs-pea-protein\/#What_is_the_difference_between_keratin_and_protein\" >What is the difference between keratin and protein?<\/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\/hydrolyzed-keratin-vs-pea-protein\/#What_is_the_difference_between_hydrolyzed_pea_protein_and_pea_protein_isolate\" >What is the difference between hydrolyzed pea protein and pea protein isolate?<\/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\/hydrolyzed-keratin-vs-pea-protein\/#Can_hydrolyzed_pea_protein_replace_keratin_in_a_vegan_hair_product\" >Can hydrolyzed pea protein replace keratin in a vegan hair product?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/collagensei.com\/fr\/hydrolyzed-keratin-vs-pea-protein\/#References\" >R\u00e9f\u00e9rences<\/a><\/li><\/ul><\/nav><\/div>\n\nHydrolyzed keratin and hydrolyzed pea protein are both protein-derived hair-conditioning ingredients, but they are not interchangeable. Hydrolyzed keratin is usually animal-derived and has a keratin-like amino-acid profile that fits repair-focused positioning. Hydrolyzed pea protein is plant-derived and better suited to vegan or plant-based positioning. For hair-care formulas, the better choice depends on peptide size, source, substantivity, solubility, sensory performance, claim strategy, and supplier documentation\u2014not simply whether one protein is \u201cstronger\u201d than the other.<\/p>\n\n<p>One important clarification: the hair-care comparison should be between <strong>hydrolyzed keratin and hydrolyzed pea protein<\/strong>, not hydrolyzed keratin and ordinary food-grade pea protein isolate. Hydrolysis changes molecular size and cosmetic behavior, so a protein powder designed for nutrition should not automatically be treated as a hair-conditioning active.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1000\" height=\"558\" src=\"https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/hydrolyzed-keratin-vs-pea-protein-hair.webp\" alt=\"Hydrolyzed keratin and hydrolyzed pea protein comparison for hair formulations\" class=\"wp-image-24508\" srcset=\"https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/hydrolyzed-keratin-vs-pea-protein-hair.webp 1000w, https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/hydrolyzed-keratin-vs-pea-protein-hair-300x167.webp 300w, https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/hydrolyzed-keratin-vs-pea-protein-hair-768x429.webp 768w, https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/hydrolyzed-keratin-vs-pea-protein-hair-18x10.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Hydrolyzed_Keratin_vs_Pea_Protein_for_Hair_Core_Differences\"><\/span>Hydrolyzed Keratin vs Pea Protein for Hair: Core Differences<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<table>\n<thead>\n<tr>\n<th>Facteur<\/th>\n<th>K\u00e9ratine hydrolys\u00e9e<\/th>\n<th>Prot\u00e9ine de pois hydrolys\u00e9e<\/th>\n<th>Signification de la formulation<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Source<\/td>\n<td>Usually animal-derived keratin materials such as wool or feathers<\/td>\n<td>Plant-derived pea protein<\/td>\n<td>Directly affects vegan, source and traceability claims<\/td>\n<\/tr>\n<tr>\n<td>Protein identity<\/td>\n<td>Keratin-derived peptides and amino acids<\/td>\n<td>Pea-derived peptides and amino acids<\/td>\n<td>Pea protein is not true keratin<\/td>\n<\/tr>\n<tr>\n<td>Positionnement type<\/td>\n<td>Damaged-hair conditioning, strength, repair-focused story<\/td>\n<td>Plant-based conditioning, film-forming and vegan-friendly story<\/td>\n<td>Claim language should match finished-product evidence<\/td>\n<\/tr>\n<tr>\n<td>Published hair-fiber evidence<\/td>\n<td>More direct peer-reviewed research is available<\/td>\n<td>Direct hair-fiber evidence specific to pea protein hydrolysate is more limited<\/td>\n<td>Do not assume equal evidence strength<\/td>\n<\/tr>\n<tr>\n<td>Poids mol\u00e9culaire <a class=\"wpil_keyword_link\" href=\"https:\/\/collagensei.com\/fr\/keratine-hydrolysee-vs-huile-dalgue-dha\/\" target=\"_blank\"  rel=\"noopener\" title=\"K\u00e9ratine hydrolys\u00e9e vs. huile d&#039;algue DHA\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3912\">l'importance<\/a><\/td>\n<td>High: peptide size affects penetration versus surface deposition<\/td>\n<td>High: hydrolysis degree affects solubility, peptide profile and sensory behavior<\/td>\n<td>Request molecular-weight or hydrolysis specifications<\/td>\n<\/tr>\n<tr>\n<td>Vegan status<\/td>\n<td>Usually not vegan when sourced from animal keratin<\/td>\n<td>Plant-derived and compatible with vegan positioning if the full formula qualifies<\/td>\n<td>Verify source documents rather than relying on the word \u201ckeratin\u201d<\/td>\n<\/tr>\n<tr>\n<td>Le plus adapt\u00e9<\/td>\n<td>Repair masks, conditioners, intensive treatments, protein-focused hair products<\/td>\n<td>Plant-based shampoos, conditioners, leave-ins and vegan hair-care concepts<\/td>\n<td>Final choice depends on formula architecture and target consumer<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"What_Is_Hydrolyzed_Keratin\"><\/span>What Is Hydrolyzed Keratin?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p>Keratin is a structural protein naturally found in hair, nails and the outer layers of skin. Native keratin is highly cross-linked and poorly soluble. Hydrolysis breaks keratin into smaller peptide and amino-acid fractions that can be dispersed more easily in cosmetic systems.<\/p>\n\n<p>Published hair-fiber studies show why molecular weight matters. Lower- and mid-molecular-weight keratin peptides can penetrate more deeply into damaged hair fibers, while larger fractions tend to remain closer to the surface. Other studies have reported improvements in mechanical properties or protection under specific test conditions. These findings support a cosmetic conditioning and damage-repair narrative, but they do not justify claims that a topical product permanently rebuilds living hair or treats hair-loss disease.<\/p>\n\n<p>For sourcing projects, review the exact <a href=\"https:\/\/collagensei.com\/fr\/fabricant-daliments-pour-sportifs\/exportateur-de-keratine-hydrolysee-en-vrac\/\" target=\"_blank\" rel=\"noopener\">k\u00e9ratine hydrolys\u00e9e en vrac<\/a> specification, including source material, hydrolysis method, molecular-weight distribution, protein\/peptide content, odor, color, solubility, microbial limits and heavy metals.<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"What_Is_Hydrolyzed_Pea_Protein\"><\/span>What Is Hydrolyzed Pea Protein?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p>Hydrolyzed pea protein is produced by partially breaking pea proteins into smaller peptide fractions. This is different from standard pea protein isolate or concentrate, which is primarily sold as a nutritional protein ingredient. In hair-care development, hydrolyzed pea protein is selected for plant-based positioning and for the functional behavior of its peptide mixture in a finished cosmetic system.<\/p>\n\n<p>The exact performance depends on the ingredient grade. Two materials both labeled \u201chydrolyzed pea protein\u201d can differ in degree of hydrolysis, peptide-size distribution, solids, carrier system, odor, color, pH, preservation system and solubility. Brands should therefore review <a href=\"https:\/\/collagensei.com\/fr\/fabricant-daliments-pour-sportifs\/fabricant-de-proteines-de-pois\/\" target=\"_blank\" rel=\"noopener\">pea protein ingredient specifications<\/a> and confirm that the offered grade is actually suitable for the intended cosmetic or beauty application.<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Hydrolyzed_Pea_Protein_vs_Pea_Protein_Isolate_Why_the_Difference_Matters\"><\/span>Hydrolyzed Pea Protein vs Pea Protein Isolate: Why the Difference Matters<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<table>\n<thead>\n<tr>\n<th>Param\u00e8tre<\/th>\n<th>Prot\u00e9ine de pois hydrolys\u00e9e<\/th>\n<th>Isolat de prot\u00e9ines de pois<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Objectif principal<\/td>\n<td>Functional peptide ingredient; may be used in cosmetic or specialty formulations depending on grade<\/td>\n<td>Dietary protein and food\/supplement fortification<\/td>\n<\/tr>\n<tr>\n<td>Traitement<\/td>\n<td>Protein is additionally hydrolyzed to reduce peptide size<\/td>\n<td>Protein is isolated\/concentrated without necessarily being hydrolyzed<\/td>\n<\/tr>\n<tr>\n<td>Formulation behavior<\/td>\n<td>Depends strongly on degree of hydrolysis and peptide distribution<\/td>\n<td>Usually evaluated for protein content, taste, texture and nutrition performance<\/td>\n<\/tr>\n<tr>\n<td>Hair-care relevance<\/td>\n<td>Potentially relevant when supplied as a cosmetic-appropriate grade<\/td>\n<td>Do not assume a food-grade isolate will perform like a cosmetic hydrolysate<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n<p>This distinction directly addresses search queries such as \u201chydrolyzed pea protein vs pea protein\u201d and \u201cpea protein isolate vs hydrolyzed pea protein.\u201d It also prevents a common content error: using nutrition data about pea protein isolate as proof of topical hair performance.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1000\" height=\"558\" src=\"https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/keratin-vs-pea-protein-source-vegan-comparison.webp\" alt=\"Animal-derived hydrolyzed keratin versus plant-derived pea protein source comparison\" class=\"wp-image-24510\" srcset=\"https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/keratin-vs-pea-protein-source-vegan-comparison.webp 1000w, https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/keratin-vs-pea-protein-source-vegan-comparison-300x167.webp 300w, https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/keratin-vs-pea-protein-source-vegan-comparison-768x429.webp 768w, https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/keratin-vs-pea-protein-source-vegan-comparison-18x10.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Which_Is_Better_for_Hair_Hydrolyzed_Keratin_or_Hydrolyzed_Pea_Protein\"><\/span>Which Is Better for Hair: Hydrolyzed Keratin or Hydrolyzed Pea Protein?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p><strong>For a repair-focused formula with animal-derived sourcing acceptable, hydrolyzed keratin has the stronger direct hair-fiber evidence base.<\/strong> Research on hydrolyzed keratin has examined penetration, surface deposition, tensile properties and resistance to specific forms of damage.<\/p>\n\n<p><strong>For vegan or plant-based positioning, hydrolyzed pea protein is the more natural fit.<\/strong> However, the scientific evidence should be described carefully. In the sources reviewed for this update, direct peer-reviewed hair-fiber studies specific to hydrolyzed pea protein were sparse compared with keratin. That means brands should rely on ingredient-specific technical data and finished-product testing rather than copying strong \u201crepair\u201d claims from keratin research.<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"How_Hydrolyzed_Proteins_Interact_With_Hair\"><\/span>How Hydrolyzed Proteins Interact With Hair<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p>Hair fibers are non-living keratinized structures. Cosmetic proteins work by interacting with the fiber rather than changing biological hair growth. Depending on peptide size, charge and formulation conditions, hydrolyzed proteins can adsorb onto damaged areas, form a film, reduce friction, improve feel, or\u2014in some cases\u2014penetrate into portions of the fiber.<\/p>\n\n<p>For hydrolyzed keratin specifically, peer-reviewed studies have shown that molecular-weight distribution changes where the peptides are located after treatment. This is why a supplier statement such as \u201clow molecular weight\u201d should be supported by an actual specification rather than used as a generic marketing phrase.<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Is_Hydrolyzed_Keratin_Vegan\"><\/span>Is Hydrolyzed Keratin Vegan?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p>Traditional hydrolyzed keratin is generally <strong>not vegan<\/strong> because commercial keratin is commonly obtained from animal-derived materials such as wool or feathers. A plant-derived hydrolyzed protein can be marketed as a keratin alternative or \u201cvegetable keratin\u201d in some commercial contexts, but it is not the same chemical source as true keratin.<\/p>\n\n<p>For brand claims, request a source statement and verify the full formula. \u201cVegan keratin\u201d can be confusing if the ingredient is actually a blend of wheat, soy, corn, pea or other plant proteins. The INCI name and supplier documentation should make the real ingredient identity clear.<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Vegetable_Keratin_vs_Animal_Keratin_What_Does_%E2%80%9CVegetable_Keratin%E2%80%9D_Mean\"><\/span>Vegetable Keratin vs Animal Keratin: What Does \u201cVegetable Keratin\u201d Mean?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p>\u201cVegetable keratin\u201d is usually a marketing term for plant-derived proteins or amino-acid blends designed to provide keratin-like cosmetic functionality. Plants do not naturally produce the same keratin protein found in animal hair, wool, feathers or nails.<\/p>\n\n<p>For formulators, the useful comparison is therefore not \u201creal keratin versus plant keratin\u201d but:<\/p>\n\n<ul>\n<li>source and claim eligibility;<\/li>\n<li>amino-acid and peptide profile;<\/li>\n<li>molecular-weight distribution;<\/li>\n<li>film formation and substantivity;<\/li>\n<li>solubility and compatibility with the formula;<\/li>\n<li>sensory effect on different hair types;<\/li>\n<li>supplier quality documentation.<\/li>\n<\/ul>\n\n<p>Brands considering another plant-derived protein option can also review the related <a href=\"https:\/\/collagensei.com\/fr\/keratine-hydrolysee-vs-proteine-de-ble-hydrolysee\/\" target=\"_blank\" rel=\"noopener\">k\u00e9ratine hydrolys\u00e9e vs prot\u00e9ine de bl\u00e9 hydrolys\u00e9e<\/a> formulation comparison.<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Does_Hydrolyzed_Pea_Protein_Help_Hair_Growth\"><\/span>Does Hydrolyzed Pea Protein Help Hair Growth?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p>Do not confuse <strong>prot\u00e9ine de pois<\/strong> avec <strong>pea sprout extract<\/strong>. Published hair-growth research exists for specific pea sprout extracts, but that evidence cannot automatically be transferred to hydrolyzed pea protein. A shampoo or conditioner containing pea protein hydrolysate should not make hair-growth or hair-loss treatment claims unless the finished product has the required evidence and regulatory status.<\/p>\n\n<p>For U.S. cosmetics, claims intended to treat hair loss or affect the structure or function of the body can move a product into drug territory. Cosmetic copy should focus on substantiated appearance and conditioning outcomes such as smoother feel, reduced friction, improved manageability, or stronger-feeling hair where the finished-product data support those statements.<\/p>\n\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Can_Hydrolyzed_Keratin_and_Hydrolyzed_Pea_Protein_Be_Used_Together\"><\/span>Can Hydrolyzed Keratin and Hydrolyzed Pea Protein Be Used Together?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p>Potentially, yes. A mixed-protein system can combine a keratin-derived repair story with plant-derived protein positioning, but the blend should be evaluated as a formulation rather than assumed to be synergistic.<\/p>\n\n<p>Les principaux tests sont les suivants :<\/p>\n\n<ul>\n<li>clarity or haze in the finished system;<\/li>\n<li>pH compatibility;<\/li>\n<li>viscosity change;<\/li>\n<li>odor and color;<\/li>\n<li>protein precipitation;<\/li>\n<li>wet and dry combing;<\/li>\n<li>hair-fiber friction;<\/li>\n<li>breakage or tensile testing where appropriate;<\/li>\n<li>stability under intended storage conditions.<\/li>\n<\/ul>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Which_Ingredient_Fits_Each_Hair-Care_Product_Format\"><\/span>Which Ingredient Fits Each Hair-Care Product Format?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<table>\n<thead>\n<tr>\n<th>Format du produit<\/th>\n<th>K\u00e9ratine hydrolys\u00e9e<\/th>\n<th>Prot\u00e9ine de pois hydrolys\u00e9e<\/th>\n<th>Key Development Question<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Repair mask<\/td>\n<td>Strong fit for intensive repair positioning<\/td>\n<td>Useful for plant-based support or mixed-protein systems<\/td>\n<td>Does the formula improve breakage, combing or feel versus control?<\/td>\n<\/tr>\n<tr>\n<td>Conditioner<\/td>\n<td>Suitable when deposition and damaged-hair targeting are desired<\/td>\n<td>Suitable for vegan\/plant-based conditioning concepts<\/td>\n<td>How does each protein affect slip, stiffness and build-up?<\/td>\n<\/tr>\n<tr>\n<td>Shampoo<\/td>\n<td>Can support protein-conditioning claims in a rinse-off system<\/td>\n<td>Can support plant-protein positioning<\/td>\n<td>Is the protein stable and compatible with the surfactant system?<\/td>\n<\/tr>\n<tr>\n<td>Leave-in<\/td>\n<td>Useful when surface conditioning and film formation are desired<\/td>\n<td>Potential fit for lightweight plant-protein systems<\/td>\n<td>Does repeated use cause stiffness or residue?<\/td>\n<\/tr>\n<tr>\n<td>Beauty supplement<\/td>\n<td>Requires a food\/supplement-appropriate <a class=\"wpil_keyword_link\" href=\"https:\/\/collagensei.com\/fr\/quest-ce-que-la-keratine-hydrolysee\/\" target=\"_blank\"  rel=\"noopener\" title=\"What Is Hydrolyzed Keratin? Hair Benefits, Safety and Formulation Guide\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3913\">keratin hydrolysate<\/a> and evidence specific to oral use<\/td>\n<td>Pea protein may contribute dietary protein, but hair claims require appropriate evidence<\/td>\n<td>Do not transfer topical evidence to oral products or vice versa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"B2B_Quality_Specifications_to_Request\"><\/span>B2B Quality Specifications to Request<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p>For either ingredient, a marketing brochure is not enough. Request a specification package that answers the following:<\/p>\n\n<ul>\n<li><strong>Source :<\/strong> wool, feather or other keratin source; pea species\/raw-material origin for pea protein.<\/li>\n<li><strong>Hydrolysis process:<\/strong> enzymatic, acid, alkaline or other method.<\/li>\n<li><strong>Molecular-weight distribution:<\/strong> average and range, with the test method if available.<\/li>\n<li><strong>Protein\/peptide content:<\/strong> define the analytical method and acceptance range.<\/li>\n<li><strong>Amino-acid profile:<\/strong> particularly useful for keratin positioning and batch consistency.<\/li>\n<li><strong>Physical properties:<\/strong> appearance, odor, color, pH, solubility and bulk density where relevant.<\/li>\n<li><strong>Contaminants :<\/strong> heavy metals, microbiology and residual processing chemicals appropriate to the grade.<\/li>\n<li><strong>Source\/claim documents:<\/strong> vegan statement where applicable, allergen statement, GMO statement, origin and traceability.<\/li>\n<li><strong>Cosmetic documentation:<\/strong> INCI name, recommended use level, preservative\/carrier details for liquid grades, and compatibility guidance.<\/li>\n<li><strong>Supplement documentation:<\/strong> only when the grade is intended for ingestion; review food\/supplement compliance separately from cosmetic use.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1000\" height=\"558\" src=\"https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/hydrolyzed-keratin-pea-protein-quality-testing.webp\" alt=\"Quality testing for hydrolyzed keratin and pea protein peptide specifications\" class=\"wp-image-24512\" srcset=\"https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/hydrolyzed-keratin-pea-protein-quality-testing.webp 1000w, https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/hydrolyzed-keratin-pea-protein-quality-testing-300x167.webp 300w, https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/hydrolyzed-keratin-pea-protein-quality-testing-768x429.webp 768w, https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/hydrolyzed-keratin-pea-protein-quality-testing-18x10.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Safety_and_Claim_Considerations\"><\/span>Safety and Claim Considerations<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p>Hydrolyzed proteins are widely used as conditioning ingredients, but sensitization or intolerance can occur with protein-derived materials in some individuals. The finished-product safety assessment should consider source, peptide-size distribution, impurities, concentration, product format and exposure.<\/p>\n\n<p>Do not equate hydrolyzed keratin with a salon \u201ckeratin treatment.\u201d Salon smoothing systems may contain additional reactive chemistry; hydrolyzed keratin itself is a protein-derived ingredient and should be evaluated separately from the complete treatment formula.<\/p>\n\n<p>For U.S. marketing, cosmetic claims must be truthful and not misleading. Avoid claims that a cosmetic protein ingredient regenerates follicles, reverses hair loss, permanently heals split ends, or biologically rebuilds hair unless the product is regulated and substantiated for that intended use.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"558\" src=\"https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/keratin-vs-pea-protein-hair-formulation-guide.webp\" alt=\"Hydrolyzed keratin versus pea protein hair formulation decision guide\" class=\"wp-image-24514\" srcset=\"https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/keratin-vs-pea-protein-hair-formulation-guide.webp 1000w, https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/keratin-vs-pea-protein-hair-formulation-guide-300x167.webp 300w, https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/keratin-vs-pea-protein-hair-formulation-guide-768x429.webp 768w, https:\/\/collagensei.com\/wp-content\/uploads\/2024\/10\/keratin-vs-pea-protein-hair-formulation-guide-18x10.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>FAQ<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<h3><span class=\"ez-toc-section\" id=\"Is_hydrolyzed_pea_protein_good_for_hair\"><\/span>Is hydrolyzed pea protein good for hair?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Hydrolyzed pea protein can be used as a plant-derived hair-conditioning protein when the ingredient grade is designed for cosmetic use. Its performance depends on hydrolysis degree, peptide size, formulation and finished-product testing. Direct peer-reviewed hair-fiber evidence is more limited than for hydrolyzed keratin.<\/p>\n\n<h3><span class=\"ez-toc-section\" id=\"Is_pea_protein_good_for_hair\"><\/span>Is pea protein good for hair?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>For topical hair care, the relevant ingredient is usually a cosmetic-grade hydrolyzed pea protein rather than ordinary nutritional pea protein isolate. Food-grade protein data should not be used as direct proof of topical hair performance.<\/p>\n\n<h3><span class=\"ez-toc-section\" id=\"Is_hydrolyzed_keratin_good_for_hair\"><\/span>Is hydrolyzed keratin good for hair?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Hydrolyzed keratin has peer-reviewed evidence showing surface deposition, peptide penetration and changes in mechanical properties under specific test conditions. Results depend strongly on molecular weight, formulation and hair-damage model.<\/p>\n\n<h3><span class=\"ez-toc-section\" id=\"Is_hydrolyzed_keratin_vegan\"><\/span>Is hydrolyzed keratin vegan?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Usually no. Traditional hydrolyzed keratin is generally sourced from animal keratin such as wool or feathers. Plant proteins sold as \u201cvegetable keratin\u201d are alternatives, not the same source protein.<\/p>\n\n<h3><span class=\"ez-toc-section\" id=\"What_is_the_difference_between_keratin_and_protein\"><\/span>What is the difference between keratin and protein?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Keratin is a specific family of structural proteins. \u201cProtein\u201d is a broad category that includes keratin, pea protein, wheat protein, soy protein and many others. Hydrolyzed keratin is therefore a protein-derived ingredient, but not all proteins are keratin.<\/p>\n\n<h3><span class=\"ez-toc-section\" id=\"What_is_the_difference_between_hydrolyzed_pea_protein_and_pea_protein_isolate\"><\/span>What is the difference between hydrolyzed pea protein and pea protein isolate?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Hydrolyzed pea protein has undergone an additional hydrolysis step that breaks proteins into smaller peptides. Pea protein isolate is primarily produced to concentrate dietary protein and may not have the same molecular profile or cosmetic functionality.<\/p>\n\n<h3><span class=\"ez-toc-section\" id=\"Can_hydrolyzed_pea_protein_replace_keratin_in_a_vegan_hair_product\"><\/span>Can hydrolyzed pea protein replace keratin in a vegan hair product?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>It can serve as a plant-derived protein alternative, but it should not be described as chemically identical to keratin. Validate the finished formula for conditioning performance, sensory feel and claims before using it as a replacement.<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"References\"><\/span>R\u00e9f\u00e9rences<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ol>\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/32946595\/\" target=\"_blank\" rel=\"noopener nofollow\">Penetration of different molecular weight hydrolysed keratins into hair fibres and their effects on the physical properties of textured hair<\/a><\/li>\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/40076404\/\" target=\"_blank\" rel=\"noopener nofollow\">Performance and Mechanism of Hydrolyzed Keratin for Hair Photoaging Prevention<\/a><\/li>\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/23414102\/\" target=\"_blank\" rel=\"noopener nofollow\">Feather keratin hydrolysates obtained from microbial keratinases: effect on hair fiber<\/a><\/li>\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/34666897\/\" target=\"_blank\" rel=\"noopener nofollow\">Biotechnology of functional proteins and peptides for hair cosmetic formulations<\/a><\/li>\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/37736006\/\" target=\"_blank\" rel=\"noopener nofollow\">Transparent silicone-free shampoo containing proteins with strong hair conditioning properties<\/a><\/li>\n<li><a href=\"https:\/\/www.fda.gov\/cosmetics\/cosmetics-labeling\/cosmetics-labeling-claims\" target=\"_blank\" rel=\"noopener nofollow\">FDA: Cosmetics Labeling Claims<\/a><\/li>\n<li><a href=\"https:\/\/single-market-economy.ec.europa.eu\/sectors\/cosmetics\/cosmetic-ingredient-database\/cosing-glossary-ingredients_en\" target=\"_blank\" rel=\"noopener nofollow\">European Commission: CosIng glossary of common cosmetic ingredient names<\/a><\/li>\n<\/ol>\n<\/article>","protected":false},"excerpt":{"rendered":"<p>Hydrolyzed keratin and hydrolyzed pea protein are both protein-derived hair-conditioning ingredients, but they are not interchangeable. Hydrolyzed keratin is usually [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":24508,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"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":[200,645],"tags":[524,324],"class_list":["post-3324","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hydrolyzed-keratin","category-hydrolyzed-pea-protein","tag-hydrolyzed-collagen","tag-hydrolyzed-keratin-protein"],"_links":{"self":[{"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/posts\/3324","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=3324"}],"version-history":[{"count":1,"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/posts\/3324\/revisions"}],"predecessor-version":[{"id":24516,"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/posts\/3324\/revisions\/24516"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/media\/24508"}],"wp:attachment":[{"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/media?parent=3324"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/categories?post=3324"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/collagensei.com\/fr\/wp-json\/wp\/v2\/tags?post=3324"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}