Vacuum suction uses suction cups to lift the skin and stimulate the lymphatic and circulatory systems. It can be used on any part of the body with sufficient fat and is often applied as a course of treatments to improve areas like cellulite. The machine consists of a pump, cups, tubing and controls. Treatment methods include gliding individual cups or using multiple pulsating cups. Precautions must be taken to prevent bruising, such as gradually increasing suction and releasing pressure before removing cups.