Low-Molecular-Weight Collagen Peptides Improve Hair Health in Adults with Damaged Hair: A Randomized, Double-Blind, Placebo-Controlled Trial - Yu-ri Gwon; AReum Kim; Mi Hye Seo; Ji-Hae Lee; Jin Hee Shin; Hae Kwang Lee; Byung Cheol Park; Joon Seok; Beom Joon Kim; Jinhak Kim; Miyoung Park (International Journal of Peptide Research and Therapeutics, 2026)