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 Organic Serum Copper Peptide for Anti Aging & Skin Repair GHK Cu: The Midlife Peptide Your Skin Has Been Missing (and Why It's Not Just About Wrinkles) Relished Food Holistic Nutrition GHK Cu Copper Peptide Hair Tonic for Fuller Looking Hair 12 Week Supply (30 mL)