GHK Cu Copper Peptide Collagen Boost & Skin Regeneration Calibrate Hydration What are the benefits, recommended regimen, and safety considerations of topical GHKCu (copper peptide) for skin repair and rejuvenation in healthy adults? Ghk cu and skin peptides (topical) Skin regeneration and wrinkle reduction Longevity Protocols So excited about this peptide! GHK Cu serum and scalp solution available Fascinating peptide that helps to prevent and reduce fine lines and wrinkles. Applied topically on the scalp for hair growth.