GHK Cu (Copper Peptide) is one of the most studied regenerative peptides, mainly used for skin rejuvenation, healing, and hair growth. . It's a naturally occurring tripeptide found in your body (plasma, saliva, GHK Cu Pptido de Cobre Azul Alidina Kit Suero Liofilizado Piel y Cabello 50mg+3ml Alterna Peptido GENERICO Falabella Per Copper Peptide Serum for Hair Regrowth & Thinning Hair Feline Skinscience 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