Copper peptides explained what are the differences between copper peptides and GHK CU peptides? What they actually do for the skin in terms of repair and collagen, and what you can and cant mix GHK CU (Scalp Drops) Regen Doctors GHK CU 50 mg LIVV GHK Cu (Copper Peptide) isn't just another trend. It's a naturally occurring peptide in our bodies that plays a vital role in healing, collagen production, skin regeneration, and even hair support. Here's all