GHK Cu (Copper) For Sale (50mg) Core Peptides Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Some people notice their skin looks worse before it improves with GHK Cu. This temporary phase is often called the copper uglies., #skincare, #ghkcu, #skinhealth, #longevity, #peptides Officially started my "copper uglies" phase of GHK CU, phase is NOT for the weak. No pin pain, but my skin is purging and I hate it