Introduce a clarifying insight to your daily regimen with this Clarifying Colloidal Sulfur Mask from Dr. Dennis Gross Skincare™. This dermatologist formulated mask clarifies the skin by absorbing excess oil and acne causing bacteria. Colloidal treats acne, blackheads and larger pores. Prickly pear calms redness and irritation. Suitable for use on face, chest and back. To use: Cleanse skin thoroughly before applying and apply a thin layer to the affected are on to three times daily. Leave on for 10 minutes, then rinse. May be worn overnight and washed off in the morning. Measurements: Capacity: 1.7 oz.