The INKEY List PHA Toner gently exfoliates for brighter, smoother skin. Polyhydroxy acid (PHA) provides gentle chemical exfoliation, removing dead skin cells from the surface. The large molecules in the toner also help to naturally lock in moisture, making it suitable for sensitive skin. Niacinamide adds another benefit, working to further enhance the skin's overall texture. This toner works to reveal a nourished, smoother, and more radiant complexion with regular use.