January 2026 in “International Journal of Peptide Research and Therapeutics” Collagen supplements improve hair health and are safe.
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.
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January 2024 in “Dermatology Research and Practice” Taking a collagen and vitamin C supplement improves skin and hair health.
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January 1966
Collagen peptides may help maintain hair growth and could be beneficial for hair loss conditions.