do vital proteins collagen peptides work?

If you look at this from a business and market validation perspective, the answer is absolutely yes.
You don’t build a billion-dollar brand and get acquired by Nestlé if your product doesn’t deliver results. In the beauty and supplement space, the repeat purchase rate is the ultimate proof of efficacy. Consumers generally see noticeable improvements in their nail strength and skin hydration within 4 to 8 weeks. Our goal as competing brand owners is to source raw materials that match or exceed that exact level of efficacy.