GHK Copper Peptide GHK Cu Tripeptide 1 GHK Cu is that feminine peptide every man should still be using if you want to age well. In this video I show the exact math and visuals for the dosage I take 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 Facial Serum Empower Pharmacy AHK CU Dosage Guide: How Much to Use Daily Neurogan Health