GHK Cu Peptide Side Effects Safety, Treatments Neurogan Health GHK Cu is the compound your body made at 25 and quietly stopped making. Most people find it in overpriced serums. Few understand what it actually does, or what happens when you're not Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r SkincareAddiction GHK Cu Hair Growth The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline