Vacuum Therapy Cups for Buttocks Enhancement Skin Dermotherapies are specifically designed devices to apply the vacuum therapy technique in the gluteal area with the goal of shaping, toning, lifting, and improving the appearance of this area. The Vacuum Therapy Cups for Buttocks Enhancement Skin Dermotherapies usually have a rounded or bell-shaped form to adapt to the anatomy of the buttocks. They come in different sizes to accommodate different body types and needs.