GHK-Cu (glycyl-L-histidyl-L-lysine copper) is a naturally occurring copper-binding peptide that has been studied for its role in tissue repair, skin rejuvenation, and hair health. It appears to help regulate genes involved in healing, collagen production, and inflammation. Potential uses being studied include: Skin rejuvenation: May improve collagen and elastin production, reduce the appearance of fine lines, and improve skin texture and firmness. Wound healing: May support faster healing by promoting tissue repair and reducing inflammation. Hair growth: May help stimulate hair follicles and improve scalp health, making it a common ingredient in some hair restoration products. Recovery: Research suggests it may aid the repair of muscles, tendons, and other connective tissues after injury. While GHK-Cu has encouraging laboratory and early clinical research—especially in topical skincare—many injectable uses are still considered investigational, and there is not yet strong evidence supporting its effectiveness for all of the purposes it’s promoted for. If you’re interested in GHK-Cu for anti-aging, skin tightening after weight loss, hair growth, or recovery, I can explain what the evidence looks like for each specific goal.
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