1% GHK CU solution: is this applied directly on skin or diluted further? : r DIYaesthetics Let's talk about one of my FAVORITE glow peptides: GHK Cu GHK Cu (Copper Peptide) is a naturally occurring peptide in your body that plays a HUGE role in healing, repair, and overall Replying to @Christy Greenham Avoiding Copper Uglies ON GHK Cu! I go copper uglies TikTok Two Weeks on GHK CU by Rory Uphold The Ladies Room