The sensiderm gel can be used as a mask once or twice a week. Apply in a thick coat and leave on for 20 mins. Can be used as a treatment product day or night before you apply your protective or night cream. It is calming, cooling, and soothing. It attenuates superficial redness and irritation related to dilated capillaries. Recommended after treatments such as peels, microdermabrasion and laser. Great diffusing and desensitizing product for immediate comfort.