How long will a 50 mg supply of GHKCu last when dosing 2 mg daily for five consecutive days followed by two days off each week? GHK Cu Peptide (50mg) Advanced Skin Rejuvenation & Healing Support GHK Cu Peptide: What It Does for Body Composition and Metabolic Health Injectable Peptides for Anti Aging? A Dermatologist Explains GHK Cu Copper peptide questions we get asked all the time How often should you use it? Do you need to avoid the sun? If you're new, start once daily (evenings are great), Aesthetics Infinity Medical Institute