Dr. C. Tuna Detox peel-off mask helps remove excess oil and dirt. Thus, the skin will be radiant and refreshed. It is suitable for every skin type. How to Use: Apply a thick, even layer (thick enough that no skin is visible) to the face and neck, except eye area, hairline or lips. Leave on for 25-30 minutes or until it dries out completely. Gently peel off the mask after it completely dries. Use once or twice a week.