GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Most people use GHK Cu way too early after microneedling and end up blunting the exact collagen signaling window they're trying to trigger. In this video I break down the biology of why I NL GHK Cu (TETRAPEPTIDE + CU) Synthagen Synthagen PL This compound has been studied for over 50 years. Most people discovered it last year on social media. In 1973, Dr. Loren Pickart identified GHK Cu while studying why young blood could