Brighten and balance your skin tone with ESTELIN Niacinamide Serum Mask – 25ml. Infused with powerful niacinamide (Vitamin B3), this revitalizing sheet mask helps minimize pores, control excess oil, and reduce the appearance of dark spots and uneven skin tone. The lightweight serum delivers deep nourishment while enhancing your skin’s natural radiance. Suitable for all skin types, especially dull or blemish-prone skin.