GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B 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. Your skin is the largest organ in your body and anti aging is the name of the game! But, GHK cu is treating so much more than just wrinkles, this is for cellular health, GHK Cu Peptide Dosage How to Use Copper Peptides, Injections Neurogan Health Glow Peptide Injection: Revolutionizing Skin Rejuvenation Hubmed The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline