GHK Cu A naturally occurring copper peptide known for supporting skin renewal, collagen production, and overall tissue health. Amaira is where science meets longevity focused care. 246 NE 6th Ave Suite 100, 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 Copper Peptide Barrier Cream Yunasence GHK Cu with Ceramides YUNASENCE 7% GHK Cu Cosmetic Ingredient Accelerant Skin Biology 15 ml MorNatural Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3000 Copper Peptide Regenerating Serum for Glowing Skin and Hair