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 Copper peptides better than tretinoin? #dermreacts #tretinoin #copperpeptide MINOXIDIL MELATONIN GHK CU TRETINOIN CAFFEINE SCALP FOAM Beauty Refined GHK CU Cosmetic for Healthy Skin Aging and Wrinkle Support Pure Prescriptions 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 STELLA COMBO Anti Aging Facial CREAM (GHK CU Estriol Niacinamide Tretinoin) Service Fee STRIVE PHARMACY