There are different kinds of masks (e.g. cactus, cucumber, etc.) for different purposes: deep-cleansing, by penetrating the pores; healing acne scars or hyper-pigmentation; brightening, for a gradual illumination of the skin tone. Some masks are designed to dry or solidify on the face, almost like plaster; others just remain wet.
The perceived effects of a facial mask treatment include revitalizing, healing, or refreshing; and, may yield temporary or long-term benefits (depending on environmental, dietary, and other skincare factors).
Masks are removed by either rinsing the face with water, wiping off with a damp cloth, or peeling off of the face. Duration for wearing a mask varies with the type of mask, and manufacturer's usage instructions. The time can range from a few minutes to overnight. Those with sensitive skin are advised to first test out the mask on a small portion of the skin, in order to check for any irritations. Some facial masks are not suited to frequent use. A glycolic mask can only be used once a month without the risk of burning the skin.