Numbuzin No.4 Hydration Glow Mineral Toner 200 ml is a hydrating, glow‑enhancing toner formulated with 89% thermal water, five types of hyaluronic acid, PHA (polyhydroxy acid), and niacinamide to deeply moisturize, smooth texture, and brighten the skin. Its lightweight, low‑acid formula gently exfoliates and refines without irritation, making it suitable for all skin types, including sensitive skin. It boosts makeup base adherence, improves absorption of subsequent products, and leaves skin soft, plump, and radiant. Ideal for daily morning and evening routines, this toner preps the complexion for serums and moisturizers while improving overall hydration and glow.