The GHK Cu pen works. But needles at home were never the answer. We took the same clinically backed copper peptide complex and put it into a serum you can use in 30 seconds, GHK CU Beverly Hills Rejuvenation Center Copper uglies = temporary. When you start GHK Cu, you can get a spike in free copper breakouts, texture, irritation. It's not the peptide failing. It's your body adjusting. Happens fast Unlocking the Power of Peptide Therapy: Your Guide to BPC 157, GHK Cu, AOD 9604, and GLP 1 Peptides at Gardenia Aesthetics & Wellness