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, Reta may dominate the fat loss conversation but GHK Cu is the peptide that made me pay attention to recovery, skin, hair, and longevity on a completely different level. Welltech GHK cu Performance Support Elite Supps GHK CU Program Calibrate Hydration Amazon.com: GHK Cu Copper Peptide Serum Anti Aging Face Serum for Skin Firming, Wrinkle Reduction, Hydration & Collagen Boosting, 30ml(1 fl oz) : Beauty & Personal Care