GHKCu Copper Peptide Therapy Skin & Healing Regeneration Dr Tahera explains that the topical version of GHK Cu and how it supports skin repair and rejuvenation. This is the cream based approach. Injectables? We'll cover that next. Because understanding your options matters. GHK Cu for hair growth does it actually work? Short answer: no. GHK Cu can be great for skin but when it comes to hair growth, the evidence just isn't there. And this Amazon.com: GHK Cu Copper Peptide Supplement, Anti Aging & Hair Growth Support, Improves Skin Elasticity & Firmness, Thicker, Fuller Hair, Easy Absorption, Precisely Dosed, 90 Vegan Capsules : Health & Household