GHK-Cu and tissue remodeling
Research on the copper tripeptide reports stimulation of collagen and glycosaminoglycan synthesis in fibroblast cultures, modulation of matrix metalloproteinases, and accelerated wound contraction in animal models. Plasma GHK levels decline substantially with age, motivating its study in skin-aging research.
In plain English
GHK-Cu is one of the better-characterized cosmetic-adjacent research peptides, with decades of dermatology-oriented literature behind it.