This product can only be purchased at Estherchic with a doctors prescription. Advanced night time treatment contains formula enhancing properties including a proprietary Trans-Epidermal Carrier to help support and maximize the efficacy and performance of night treatment products, when combined and applied in the evening. Contains 4% Hydroquinone to help reduce melanin formation, Vitamins C and E for antioxidant protection and Lactic Acid as a gentle exfoliant. Also functions as a highly effective stand alone product. This advanced correcting cream helps lighten hyperpigmentation, even out skin texture and improve the appearance of photo damaged skin, while boosting the effects of treatment products. Ingredients also include Wheat Germ Oil and Sunflower Seed Oil.