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, Amazon.com: GHK Cu Copper Peptide Supplement, Anti Aging & Hair Growth Support, Improves Skin Elasticity & Firmness, Thicker, Fuller Hair, Easy Absorption, Precisely Dosed, 90 Vegan Capsules : Health & Household Copper ions: The invisible killer of cardiovascular disease (Review) Peptide Therapy for Hair Growth: Explore Your Options Tirzepatide Dosage Guide for Weight Loss: Weekly Dosing, Units Calculator, and What Patients Should Know Florida Surgery & Weight Loss Center GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy