A year ago I started working with a copper peptide called GHK Cu. Topically every night. And under my doctor's care, I went deeper than topicals with a low dose. The difference in 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 How to Use GHK Cu Peptide for Hair and Skin: Best Practices for Anti Aging & Hair Regrowth GHK Cu has gained major attention in the cosmetic world for its role in supporting scalp and skin appearance. This lightweight foam formulation makes it easy to incorporate into routines focused on GHK Cu Dosage Calculator and Chart A Z Guide