Skin Pomegranate Health 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 Copper Peptides vs Retinol: Do You Need Both? Nubeean Noosa MINOXIDIL MELATONIN GHK CU TRETINOIN CAFFEINE SCALP FOAM Beauty Refined Alternating tretinoin and GHK Cu (copper peptides) nightly maximizes anti aging benefits while minimizing irritation. , Both are potent but DIFFERENT actives. Tretinoin speeds up cell turnover and