12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK Why Collagen Loss Accelerates After 40: The Role of GHK Cu in Menopaus Pure & Cimple Experiencing itching & burning from your GHK CU peptide injections? Try these to hacks: 1. Use a longer syringe to penetrate deeper into the fat cells. 2. Dilute the copper. Here I The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline