GHK Cu Peptides: Unlocking the Copper Peptide Revolution in Skin Care Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with GHK Copper Peptide GHK Cu Tripeptide 1 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 is a naturally occurring copper peptide known for its powerful role in skin repair, hair health, and cellular regeneration. Key Benefits: 1.Boosts Collagen & Elastin Helps improve skin firmness and elasticity.