What it is: A lightweight serum powered by 111SKIN's proprietary NAC Y² complex that future-proofs skin to help combat early signs of aging.Who it's for: Ideal for humid environments and for people with normal to oily skin.What it does: The serum is formulated by Dr. Yannis Alexandrides and powered by 111SKIN's proprietary Y² complex. It is an antioxidant-rich serum that delivers actives deep into the epidermis to plump, smooth and restore healthy skin. It is a lighter version of the Repair Serum NAC Y², perfect for oilier skin types. Over time, the restorative effects of the serum will reduce redness, rebuild stressed skin and reinforce the skin barrier, all while accelerating cellular repair by boosting glutathione—the body's master antioxidant.Key ingredients:- NAC Y² : a trio of actives with superior antioxidant capabilities that harnesses the power of glutathione, vitamin C and escin to boost the body's natural ability to repair its cells at the deepest level, restoring and repairing even the most sensitive skin- NAC: an advanced amino acid with superior reparative properties that triggers the production of glutathione to help protect against free-radical damage, preserve skin and slow the aging process- Vitamin C: in the form of sodium ascorbyl phosphate, it helps brighten skin, reduce hyperpigmentation and slow signs of fine lines and wrinkles- Escin: an active compound that naturally boosts the body's ability to calm inflammation, found in the form of horse-chestnut extract and known for assisting in the reduction of dark spots and redness/rosacea- Licorice root: brightens, tones and reduces hyperpigmentationHow to use: After cleansing, distribute 1–2 pumps between the fingertips and apply to the face and neck in an upward motion every morning and evening before moisturizer. Use after Eye Lift Gel NAC Y² and before Day Cream NAC Y² (both sold separately). Avoid direct contact with eyes. If product gets into eyes, rinse well with water immediately. Do not store in direct sunlight. If any irritation occurs, discontinue use. 1 oz. Paraben-free; paraffin-free; silicone-free; sulfate-free