GHK Cu Cooper Peptide: The Complete Skin & Repair Guide (2026) 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 Copper peptide questions we get asked all the time How often should you use it? Do you need to avoid the sun? If you're new, start once daily ( evenings are great), What time of the day do I take GHK CU? #ghkcu #mt2 #bp #transformation