Cosrx's AHA BHA Clarifying Treatment Toner is formulated with AHA, BHA and purifying botanical ingredients. As a result, it has a refreshing, clarifying and soothing effect. Your skin will be softer and more even-toned. The toner balances the skin's optimal pH level. The skin's natural pH is 5.5, and with its soft and skin-neutral formula, the toner refreshes and moisturizes while helping to prevent the formation of milia and blackheads. For the AHA BHA Clarifying Treatment Toner, mineral-rich water is used to revitalize the skin. The natural AHA provides an even complexion in terms of skin color and the natural BHA smoothes the skin. The toner is suitable for all skin types including sensitive skin types. The hyaluronic acid it contains controls excessive sebum production and achieves high moisture retention of the skin and the AHA (0.1%) repairs skin damage, it is especially suitable for sun-damaged skin, pigment spots and dryness.