Copper Peptide Skincare Regenerative Skincare Vitali Skincare BB Transform Potent Transformative GHK Cu Copper Peptide Serum Berck GHK CU 50 mg LIVV 7 days on GHK Cu. Here's my honest update. I'm not going to hype this up because the real results don't even start until week 46. But something is already happening. The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline GHK Cu Revival Clinic