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 GLOW GHK Cu (50mg) TB 500 (10mg) BPC 157 (10mg) A multi compound research blend designed for advanced laboratory study. This formulation combines three widely studied peptides across cellular and recovery focused research models. Used 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 is a regenerative peptide that: Stimulates collagen + elastin Improves firmness + texture Speeds up healing after treatments Helps restore that healthy glow (not just fake