Redness, dull complexion, blackheads... the skin endures various discomforts due to external aggressions. Beyond daily routines such as cleansing, removing makeup and moisturising, the use of a mask is recommended. The treatment is chosen based on the targeted issues. For those with combination to oily skin, a purifying mask is appropriate. This treatment allows for the deep removal of impurities accumulated on the face and the reduction of blemishes. But how should it be applied to benefit from its virtues?