Elizavecca Milky Piggy Vitamin C21% Ample Mask helps to brighten & even skin tone. This is a wash off mask, not a leave on product like the instructions on box say! It has a thick, gooey texture that you apply with spatula. Apply to clean skin, leave on 20 minutes then wash off with warm water. It has a warm tingling feeling, but it doesn't irritate my skin at all. It leaves my skin feeling so smooth. This product smells amazing!