I'll walk you through a precise DIY GHKCu serum you can prepare at home. I measure, I adjust, I protect every step tuned for peptide stability and skin absorption. Why GHKCu? 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 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 Wrinkle Twinkler DIY Peptide Serum YouTube