In a case of a stubborn problem you can leave the cup stationary problem spot. However, this leaves a cup of kiss - indicating that toxins are being removed. The cup kiss lasts a few days and is not painful.<br> Silicone Vacuum Facial Massage Suction Cups - for tightening the skin and muscles of the face, cleaning facial pores, improving blood circulation and smoothing out wrinkles.<br> High medical grade clear silicone mugs for your peace of mind.<br> Soft, hygienic, easy to use, easy to clean, for YOUR convenience.<br> Visibly reduce cellulite, improve blood circulation and promote lymphatic drainage, leaving your skin brighter and clearer.<br> functions<br> - Color: Blue, pink, green, purple, white.<br> - Material: silicone.<br> -Size: 5.5*5.5cm/2.16*2.16in.<br> -By squeezing the silicone cup, you expel the air inside. A powerful vacuum is created upon loosening your grip on the cup, as the cup attempts to draw the missing air back. When placed on the skin, the suction pulls the flesh upwards, creating a negative pressure massage. Cups can be moved over wet skin, or simply left on the skins surface.