Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum GHK Cu Skin&Hair Peptide The Fuel Stop GHK Cu peptide = one of the most powerful ingredients for skin regeneration , It helps improve elasticity, smooth fine lines, and boost that natural glow., Once you start theres no going back , 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 Cu Peptide Therapy Topical Cream