[Problem] To provide a cosmetic mask which imparts effective stimulation to the appropriate position and has a tightening effect. [Solution] This cosmetic mask is worn on the face of a user, is able to cover at least the cheeks, and is equipped with a pair of simulators which impart electric or ultrasonic stimulation to a location corresponding to either the zygomatic muscle or masseter muscle of the user. The cosmetic mask may be equipped with a stimulator fitting unit for fitting the stimulators to a cheek position, and maybe constituted so that at least some of the stimulators are detachable. The cosmetic mask may also be equipped with a nosepiece which matches the protruding shape of the nose, a left-right fitting portion which is fitted while applying tensile force to the left and right sides of the face, and a vertical fitting portion which is fitted while applying tensile force from the lower surface of the mandible over both sides of the face to the top of the head.