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 aka the beauty peptide. I've got the reconstitute and dose chart at the end for reference. Where I purchase mine from Elite Peptides Australia Discount code WISHY10 (because who doesn't love Peptides GHK CU 100mg Definitive Guide on Peptides for Skin and Hair Care Infusion Clinic ABQ Food Derived TripeptideCopper Self Healing Hydrogel for Infected Wound Healing Biomaterials Research