Does GHK-Cu work for hair loss and scalp health?

GHK-Cu has shown promise for hair regrowth by stimulating follicle proliferation and increasing hair follicle size in studies. It may improve scalp blood flow and reduce inflammation that contributes to hair loss. Topical application to the scalp or subcutaneous injection are both used, though clinical evidence is stronger for wound healing than hair growth. <a href='https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4594048/' target='_blank'>GHK-Cu tissue regeneration</a>