January 2026 in “International Journal of Peptide Research and Therapeutics” Collagen supplements improve hair health and are safe.
9 citations
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January 1966
11 citations
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April 2020 in “Nutrafoods - International Journal on Nutraceuticals, Functional Foods and Novel Foods” Taking Bioactive Collagen Peptides increases hair thickness.
Collagen peptides may help maintain hair growth and could be beneficial for hair loss conditions.
June 2023 in “Skin Research and Technology” The supplement with amino acids, iron, selenium, and marine hydrolyzed collagen improved hair growth more than drug treatment alone, with most people tolerating it well.