Copper Peptide (GHK Cu) Serum Amazon.com: Dr. Brenner Copper Peptide Serum with GHK Cu peptide, Argireline and Matrixyl 3000 Anti Aging Moisturizer for Fine Lines and Skin Elasticity (1 oz.) : Beauty & Personal Care GHK Cu Topical Hair Foam LeadWest Medical 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 Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum GHK Cu is a peptide that helps improve skin by boosting collagen and healing damage. It can be used as a cream (topical) or an injection. The cream is great for wrinkles, scars, and hydration, but it