GHK CU Copper Peptide, Face Serum, 1 oz (30 ml) Are Peptides Legal Again in 2026? Here is what RFK Jr. Just Announced Amazon.com: Skin Perfection GHK Cu Copper Peptide Powder 99.7% Pure DIY Copper Peptides Serum for Face and Scalp Cosmetic Grade GHK Cu 1 Gram Creates Up to 100ml for Fuller Hair and Defy GHK Cu (glycyl L histidyl L lysine) is a naturally occurring copper binding peptide found in human plasma. As levels decline with age, so may its support of the biological processes involved in collagen production, skin Glow Blend Regeneration, Recovery & Skin Renewal