NAC Glutathione Sync 600 mg Capsules Immune System & Lung Health GHK Cu for Skin Rejuvenation WeCare Pharmacy NAC (N acetyl cysteine) is a powerful compound that plays an important role in supporting the body's natural detoxification and antioxidant systems. One of its key functions is helping the body produce glutathione, GHK Cu: A copper bound peptide that stimulates collagen and healing. Used for skin repair and anti aging, it may reduce wrinkles, improves hair growth, and boosts metabolism, providing patients with firmer skin and a NAC Skin Care Benefits of NAC