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, Hair thinning doesn't happen overnight and fixing it isn't about quick fixes either. It starts at the root. Compounds like GHK Cu, a naturally occurring peptide in the body, are being Buy GHK Cu Exceptional 99%+ Purity Third Party COA Included GHK Cu Peptide Therapy Pricing