Though a vegan mask is safe to use, it is best to use it just 2-3 times a week. What happens if you leave a face mask on too long? Leaving a face mask on for too long may absorb the natural oil from the skin and leave it dry and dull. Do you use a face mask before or after a shower? Use a face mask before a shower if you have dry skin and after a shower if you have oily or combination skin.
