Developed to be used 1-2 times weekly on areas on spot-prone skin, the BiRetix Mask helps to disrupt the spot formation cycle resulting in clearer skin with less shine. Kaolin Clay helps to draw spot-producing impurities from the pores to clear blackheads and prevent the formation of visible acne. BiRetix Mask should only be used on areas of concern, ie. parts of the skin which experience breakouts.