Viral claim says GHK Cu reset nearly 4,000 genes to a younger state and increased collagen production in a preclinical study. This refers to research on GHK Cu, a naturally occurring copper binding peptide that GHK Cu Copper Peptide Shampoo Anti Hair Loss Shampoo Promotes New Hair Growth, 11.8 Fluid Ounce TikTok Shop Glycyl L histidyl L lysine Cu2+ (GHK Cu) Attenuates CuSO4 or LPS induced inflammation in Zebrafish larvae model ScienceDirect Epigenetic Mechanisms Activated by GHK Cu Increase Skin Collagen Density PracticalDermatology