GHK CU 50 mg LIVV Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Topical or SubQ GHK Cu? Same molecule. Very different purposes. Topical you apply it on your skin. Think of it as feeding your skin from the outside. In a 12 week study of GHK Cu Blue Copper Peptide Face Cream 4% 2400mg Night Moisturizer Anti Aging eBay GHK Cu Dosage and Protocol: A Medical Provider's Guide to the 30 Day Cycle Perfect B GHK Cu Peptides Benefits for Anti Aging Skin Rejuvenation How to Use With Micro Infusion