The technology
How vacuum therapy and lymphatic drainage machines work
A vacuum handle creates negative pressure inside a cup placed on the skin. The tissue lifts into the cup, and the handle then either rolls across the area (two rollers inside the cup knead the lifted fold, as on the LiyaShape III LS15), pulses suction on and off, or heats the lifted tissue with radiofrequency electrodes built into the rim (vacuum RF, as on the DimaSlim HUR50 and the Shape Tactics 9-in-1 systems). The lift and release cycle is what makes the format useful for lymphatic drainage protocols: it mobilizes fluid in the superficial tissue and the session usually follows the direction of lymphatic flow toward the nearest nodes.
Vacuum, vacuum roller and vacuum RF
- Vacuum only (suction cycles in a cup): the gentlest mode, used for lymphatic drainage passes and as a warm-up before other handles.
- Vacuum roller (suction plus mechanical rollers): the classic cellulite and "body shaping" handle. The LS15 combines rotation, vacuum, multipolar RF and vibration in its rotating handles.
- Vacuum RF (suction plus radiofrequency heat): the lifted fold is heated for skin firmness while suction moves fluid. The HUR50 runs vacuum from 10 to 80 kPa with RF levels 1 to 9; both Shape Tactics 9-in-1 consoles include a vacuum RF mode.
What it is used for
Lymphatic drainage sessions, the appearance of cellulite, pre-treatment warm-up and post-treatment drainage around cavitation, cryolipolysis or EMS sessions, and buttock and thigh "lifting" protocols, which are vacuum roller passes that temporarily plump and smooth the area. These are cosmetic, session-based services; the machines do not remove fat and the effects on contour depend on repeat sessions and the rest of the client's routine.