GHK Cu 50mg Third Kind GHK Cu 50MG Raw Amino Buy high quality GHK Cu 50mg (copper peptide) from the UK's leading store Pure Peptides UK So excited about this peptide! GHK Cu serum and scalp solution available Fascinating peptide that helps to prevent and reduce fine lines and wrinkles. Applied topically on the scalp for hair growth. So excited about this peptide! GHK Cu serum and scalp solution available Fascinating peptide that helps to prevent and reduce fine lines and wrinkles. Applied topically on the scalp for hair growth.