Useful. Medeciufu Aijier slimming beauty instrument adopts high-frequency ultrasonic technology, which can penetrate deep into the skin, decompose cellulite into tiny particles, and then excrete them through metabolism, thus achieving the effect of slimming and shaping. In addition, it can promote skin metabolism, contract muscles, tighten skin, shrink pores, wrinkle and whiten skin, so it is very useful.