Obagi Clinical Dark Spot Disruptor Discoloration Correcting Serum 1fl.oz. 30ml. Skin Types: Normal to Oily Normal to Dry Combination Obagi Clinical Dark Spot Disruptor Discoloration Correcting Serum uses a combination of brightening and hydrating ingredients to brighten, smooth, and soothe skin. Reduces the appearance of dark spots Evens & brightens skin for a more radiant complexion Provides immediate hydration that lasts for 24 hours for smoother, plumper-looking skin INGREDIENTS BAKUCHIOL A natural retinol alternative promoting skin turnover resulting in brighter, renewed skin and reduction in the signs of skin aging. POLYGLUTAMIC ACID A humectant superstar, polyglutamic acid is a molecule that sits on top of the skin pulling moisture from the air to hydrate skin for increased luminosity and a more radiant complexion. HYALURONIC ACID A blend of five different forms of hyaluronic acids (low molecule weight and high molecule weight) that aid in the disruption and reduction of the appearance of darks spots, while simultaneously hydrating different layers of the skin.