You are wasting your peptides if you are mixing them with GHK cu., Lets not even talk about all the the blend pens being sold., Even Peptide companies are selling GHK cu Blends. They damage the other GHK Cu 50MG Oneday Compounds GHK Cu Peptide Benefits for Skin and Hair LIVV Natural Amazon.com: Skin Perfection GHK Cu Copper Peptide Powder 99.7% Pure DIY Copper Peptides Serum for Face and Scalp Cosmetic Grade GHK Cu 1 Gram Creates Up to 100ml for Fuller Hair and