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ONDA by Deka body contouring system uses Coolwaves™ technology to shape and tighten the skin. The technology targets fat cells and reduces localised fat deposits in a non-invasive way to remove cellulite and leave the body with a smoother, firmer appearance. Standard treatment is between three to six sessions depending on desired results.

Recently featured in Tatler’s Cosmetic Surgery Guide, as the “Number 1 Treatment for A Dimple Free Derriere”, ONDA has now also added the treatment of the submental area to its list of capabilities with Tempus being one of the first clinics in London and UK to offer this.


ONDA uses the revolutionary new technology Coolwaves™ by DEKA, for non-surgical body contouring, fat reduction, and cellulite treatment. ONDA is a non-surgical body contouring device that uses Coolwave technology, which targets fat and treats cellulite and skin laxity. These unique Coolwaves bypass the upper layers of skin tissue, helping deliver more energy directly to the subcutaneous fat cell resulting in safer, more effective non-invasive body shaping treatment. With these unique Coolwaves™, you can achieve amazing results with Onda that is comfortable and has no downtime.

Procedure time
30 mins
No. of treatments
4 treatments
Mild erythema
Pain level
None to low
After 2nd treatment
Areas of treatment
All over the body (excluding the face, neck, hands and feet)

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How does ONDA Coolwaves™️ work?

Microwaves are part of the large family of electromagnetic waves [frequency range: 1 – 300 GHz]. Today they are common in many fields of everyday life including the medical field, for diagnostic or treatment purposes. However, not all microwaves are the same. No other device emits microwaves in the same way as the ONDA system’s smart handpieces! Microwaves lead the molecules absorbing them to oscillate and vibrate, thus heating up the medium that contains the molecules.

The ONDA system handpieces generate microwaves at a frequency that is preferentially absorbed by fat molecules rather than by water molecules. Therefore, when the Coolwaves™ penetrate the skin, they pass straight through the top layers of the skin without overheating, while the energy concentrates on the subcutaneous fat that highly absorbs them, around 80%.

By contrast, traditional radio frequency systems act only on the surface since it is highly absorbed by water molecules. This means that they not only fail to penetrate deep into the body to treat fat, but they also risk damaging the skin.

Case Study

How long does the ONDA Coolwaves™️ treatment take?

ONDA treatment is a very quick and easy procedure to deliver with treatment times varying depending on area size.

To help put treatment times into perspective, the ONDA device can treat a typical abdomen in 10 – 20 minutes.

How does the ONDA Coolwaves™️ treatment feel?

ONDA treatment is virtually painless, due to the skin presenting less resistance to the frequencies used with the Coolwaves™ technology, Coolwaves™  can pass through the skin more readily than other technologies, focusing the energy only where it is needed (for example in the subcutaneous adipose tissue in the event of localised fat deposits). This then results in less heating and discomfort on the skin.

Thermographic image of ex-vivo tissue treated with the ONDA handpiece v bipolar radiofrequency.

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