GHK Cu Peptide Serum: Copper Peptides for Skin Firmness Mythos Mythos Skincare Say hello to your skin's new BFF GHK Cu is a powerful peptide that supports collagen production, speeds healing, improves hair growth, and helps fight visible signs of aging. This tiny molecule GHK Cu isn't just another skincare ingredient. It's one of the most studied copper peptides in regenerative medicine because of its role in: collagen signaling tissue repair hair & skin GHK Cu Copper Peptide Collagen Boost & Skin Regeneration Calibrate Hydration