Sebium Mat Control can be used once or twice a day, seven days a week. Start by cleansing your skin with Sebium H2O or Sebium Foaming Gel. Apply Sebium Mat Control on the whole face if your skin is oily. Apply it on the T-zone (forehead, nose, chin) if you have combination skin. If your pores are significantly dilated, we recommend using Sebium Pore Refiner before Sebium Mat Control. Our shine-control treatment makes for an excellent makeup base.