Dr. Rae Lynne Kinler Quoted in BYRDIE | Collagen Peptides for Hair: Benefits and How to Use

While topical application of collagen peptides does not have the same effect on the hair and skin, they do still provide benefits. Kinler says “Collagen peptide infused shampoos and conditioners or serums are really about moisture and the amino acids benefits protecting and defending hair and scalp.” Garshick adds that when peptides are applied to the skin, they provides a signal to the body that healing or recovery needs to take place and this actually helps to boost natural collagen production.