I tried it once. I'm selling it because I received another peeler and no longer need this one. The complete set is included. I plan to pack it compactly without the box. A 4-in-1 peeling facial device from DUO is here to cleanse pores and refine skin texture! Using water and ultrasonic vibration, it vibrates the skin approximately 24,000 times per second, removing old keratin and pore impurities that remain on the skin's surface. It features ultrasonic pore cleansing, "ultrasonic + ion extraction" to attract dirt from the stratum corneum, "ultrasonic + ion introduction" to penetrate lotions and serums*1, and "ultrasonic + pulse wave" to support skin tightening.