12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK GHK Cu for Skin: SIGNAL's Guide to Rejuvenation 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 is a GHK CU Injection? Benefits and Uses Prime IV Refine PM Night Cream: Your Peptide Anti Aging Cream