Anagen Follicles Regrowth Cycles & All You Need to Know 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 restore The Science and Benefits of GHK Cu Peptide: Skincare, Hair Growth, and Beyond The ingredient replacing hair transplants? It's called Redensyl. 3% Redensyl targets hair follicle stem cells, reactivates dormant follicles GHK Cu Copper Peptide extends the anagen growth phase