The cleansing device according to the embodiment includes a housing including an accommodation space therein, a head part disposed on the housing and including a plurality of protrusions, a rotating part disposed in the receiving space and rotating the head part, and disposed in the head part, Including a piezoelectric unit including a plurality of piezoelectric elements, the piezoelectric element generates ultrasonic energy of 1 MHz or less, the horizontal direction width of the piezoelectric element is smaller than the horizontal direction width of the protrusion, each of the plurality of piezoelectric elements is the It is disposed in a region overlapping each of the plurality of protrusions in a vertical direction.
In addition, the cleansing device according to the embodiment includes a housing including an accommodation space therein, a head part disposed on the housing and including a base part and a plurality of protrusions disposed on the base part, and disposed in the accommodation space, and the A rotating part for rotating the head part and a piezoelectric part disposed in the head part and including a plurality of piezoelectric elements, the piezoelectric part disposed in the base part and generating ultrasonic energy of 1 MHz or less, and the plurality of protrusions Each of the plurality of piezoelectric elements is spaced apart from each other and has a protruding shape protruding toward one side, and the head portion includes an open area in which the plurality of protrusions are spaced apart and one surface of the base portion is exposed, and each of the plurality of piezoelectric elements is perpendicular to the open area It is placed in an area that overlaps in the direction.