SkinCeuticals Discoloration Defense 2 vials SkinCeuticals Discoloration Defense is a daily dark spot corrector for face that targets visible skin discoloration for brighter, more even-looking skin. This Skin Discoloration Serum is clinically proven to reduce the appearance of visible skin discoloration, including hard-to-treat forms such as stubborn brown patches and post-inflammatory discoloration and post acne marks. For All Skin Types Sun protection: SPF 50 Ingredient: Vitamin C, Hydroquinone