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 The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline GHK Copper Peptide GHK Cu Tripeptide 1 Copper Peptides: Benefits, Results & Skincare Guide Glimmer Goddess