Oily skin is characterized by an overproduction of sebum. Shine is noticeable all over the face, particularly on the T-zone, and pores are dilated... How to purify oily skin: Gently cleanse and purify your face with IOMA Astringent Foam Toner. It removes impurities and excess sebum and tightens pores. Mattify and moisturize your skin with Mattifying Regulating Cream, which can also be used as a makeup base. Add Gentle Exfoliating Emulsion and Absorbent Mask to your routine to reveal a radiant complexion.