SkinCeuticals Discoloration DefenseDaily dark spot corrector targets visible skin discoloration for brighter, more even looking skin. Discoloration Defense is a layerable, daily use dark spot corrector clinically proven to reduce the appearance of key types of skin discoloration in all skin tones, including hard to treat forms such as stubborn brown patches and post acne marks. Formulated with 3% tranexamic acid, 1% kojic acid, 5% niacinamide, and 5% HEPES, this formula serum for dark