Two Weeks on GHK CU by Rory Uphold The Ladies Room Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum GHK Cu Youthful Skin, Healthy Cells, Vibrant You. If youre on a GLP 1 and starting to notice changes in your skin or hair youre not alone., Copper peptides (GHK Cu) are a simple way to support your body through the process , Boost collagen, 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK Thermodynamically stable ionic liquid microemulsions pioneer pathways for topical delivery and peptide application ScienceDirect