A lot of people asked how I use GHK Cu (copper peptide) with a pen device, so here's a quick tutorial showing exactly how I do it. In this video I show how Amazon.com: QUBIT GHK Cu Copper Peptide Supplement for Skin & Hair, Easy to Absorb, Precisely Dosed 90 Vegan Capsules : Health & Household Neurogan Health, Copper Peptide GHK CU, 120 mcg, 60 Tablets iHerb BUSHAID GHK CU Copper Peptide Capsules 90 capsulesStrengthen Hair Roots, Improve Skin Elasticity, and Provide Intensive Repair Support for Skin and Hair. Best Price KSA Riyadh, Jeddah 7% GHK CU ACCELERANT Platinum Skin Care