This is a dual function mask and cleanser. You can use it all over your face and leave on for 1-2 mins for bubbling to work. Then wash off for a deeply cleansed, smooth skin. Or you can use it like a regular cleanser with a slight foaming, bubbling effect. I enjoy using it in both ways. The black color doesn’t stain anything. The charcoal cleanser is gentle yet purifying enough that it leaves my skin soft and smooth without stripping.