research A Randomized, Double-Blind, Placebo-Controlled Study Evaluating the Effects of a Polyphenol-Rich Fruit Extract Combined with Biotin on Wrinkle Morphology, Skin Surface Roughness, and Hair Shedding
In this study, a polyphenol and biotin supplement improved skin roughness and significantly reduced hair shedding, but did not demonstrate clear superiority over placebo in overall skin outcomes.


