Nightingale Daily Derma Eraser Toner is formulated with AHA & BHA complex to sweep surface dead skin cells, impurities and at the same time unclog pores for a cleaner, brighter complexion. Addition of Hyaluronic Acid helps improve hydration by attracting and retaining up to 1,000 times its weight in water from moisture in the air while Trehalos maintain and retain water on skin.