This is a functional toner designed for skin with enlarged pores, excessive oil secretion and uneven skin tone. It uses high-purity niacinamide as the core ingredient to precisely regulate skin oil and repair the skin barrier. Niacinamide helps reduce excessive sebum secretion, improve shiny T-zone problems, while shrinking and refining pores and improving the visual appearance of enlarged pores caused by oil clogging. It can also inhibit melanin transport, evenly brighten skin tone, and improve dullness and yellowing caused by oil oxidation, leaving the skin with a clear matte finish. The formula is compounded with sodium hyaluronate, panthenol and witch hazel extract to replenish moisture while controlling oil, soothe the skin, avoid dryness and tightness caused by oil control, and maintain skin water-oil balance. The product has a fresh watery texture with strong fluidity, absorbs quickly on the face, is non-sticky and does not clog the skin. It can be patted directly for absorption, or wiped with a cotton pad or applied as a wet compress on areas with concentrated pores. It is recommended to use it morning and evening after cleansing, followed by a moisturizing lotion/cream. Long-term use can improve oiliness, enlarged pores and uneven skin tone, leaving the skin delicate, fresh, even and bright.