Improvements in Scalp Elasticity and Hair Properties Following Supplementation with Low-Molecular-Weight Porcine Placental Peptides (Placenderm®): A Randomized, Double-Blind, Placebo-Controlled Clinical Trial - Yu-ri Gwon; AReum Kim; Ji-Hae Lee; Jin Hee Shin; Hae Kwang Lee; Sun Young Choi; Ji Yeon Hong; Beom Joon Kim; Jinhak Kim; Miyoung Park (International Journal of Peptide Research and Therapeutics, 2026)