ONDA Pro:
reading the evidence carefully

“Body contouring,” “cellulite treatment,” and “skin tightening” are often grouped together, but they are not the same goal. A useful consultation starts by identifying which tissue feature is creating the concern—and whether an energy-based treatment is a reasonable match.

First, separate the three concerns

Localized adiposity

This means a discrete pocket of subcutaneous fat rather than generalized weight gain. Non-invasive contouring may be considered for selected areas, but it is not a weight-loss treatment and cannot substitute for nutrition, exercise, medical weight management, or surgery when those are more appropriate.

Cellulite

Cellulite is the dimpled or uneven surface most often seen on the thighs, buttocks, and hips. Reviews describe it as common, multifactorial, and incompletely understood. Fibrous septa, fat architecture, skin laxity, and volume distribution can all influence its appearance, which is why no single treatment is ideal for every pattern.

Skin firmness

Laxity can coexist with localized fat or cellulite, but it requires its own assessment. The amount of loose skin, tissue thickness, age-related change, prior procedures, and the degree of improvement someone expects all affect whether a non-surgical option makes sense.

How does ONDA Pro use Coolwaves®?

According to DEKA, ONDA Pro delivers microwave energy at 2.45 GHz. The platform uses Pocket, Shallow, and Deep handpieces intended for different treatment depths and priorities. The manufacturer describes Pocket for smaller lifting, firming, and submental applications; Shallow for cellulite, skin tightening, and localized adiposity; and Deep for localized adiposity in larger areas.

The handpieces combine energy delivery with contact cooling. In practice, the provider must select the treatment area, applicator, pattern, and settings according to anatomy and the configuration available in the U.S. DEKA notes that not every use, configuration, accessory, or brochure statement shown on its international website is available in the United States.

What do published studies report?

Cellulite: 26 women, four sessions

A 2022 prospective study followed 26 women with moderate or severe cellulite of the buttocks and posterior thighs. Participants received four microwave-treatment sessions. At three months after the final session, the authors reported improvement in two cellulite grading scales, participant satisfaction, and circumference measurements. No serious adverse events were reported.

The study is useful because it used recognized cellulite scales and a defined follow-up point. It was still small, included only women, and did not include a randomized untreated or sham-treatment group. Its photographs and measurements should not be interpreted as a prediction for an individual patient.

Abdominal contour: 19 adults, three sessions

A 2023 study included 19 healthy adults with visible abdominal fat. Participants received three sessions four weeks apart. The paper reported a mean abdominal-circumference reduction of 3.80 ± 1.21 cm at three months and no severe pain or noticeable discomfort during treatment.

That number needs context. The study excluded people with obesity, generalized fat distribution, or irreversible skin laxity; it had no control group; and 19 participants cannot establish what most patients should expect. Circumference is also influenced by measurement technique and factors beyond local fat thickness.

Submental area: early studies, different protocols

A 2022 study of 48 participants evaluated six submental treatments given two weeks apart and reported improvement in clinician- and patient-rated fat and laxity scales at 12 weeks. A later 2025 pilot report evaluated only 10 women who received two treatments 30 days apart. These studies suggest a possible role for microwave treatment beneath the chin, but they used different devices or handpieces, schedules, and outcome methods.

What the evidence does not establish

The available ONDA and microwave-treatment literature is mostly composed of small prospective studies, observational reports, pilot work, and expert recommendations. The studies vary in applicator, device generation, body area, session count, follow-up, and outcome measure. They do not provide a reliable universal treatment schedule or guarantee long-term persistence for every patient.

A 2024 international advisory-board review explicitly noted that long-term efficacy and safety evaluation was still missing and that future research could change its recommendations. In January 2026, a previously published one-year follow-up paper on microwave treatment for cellulite and localized adiposity was retracted. Muse does not use that retracted paper as evidence in this guide.

Independent, adequately powered randomized trials—with standardized photography, blinded assessment, diverse participants, clear adverse-event reporting, and longer follow-up—would make the evidence more dependable.

How Muse approaches ONDA Pro planning in Bellevue

1. Define the visible feature

We distinguish a localized fat pocket from cellulite depressions, diffuse skin laxity, muscle tone, and generalized weight change. More than one concern may be present, and a different treatment—or no treatment—may be more appropriate.

2. Examine the tissue and review health history

The consultation considers the location and thickness of tissue, skin quality, sensitivity, prior procedures, medications, medical history, implanted devices, and current goals. Treatment should not be selected from a photograph or marketing claim alone.

3. Discuss tradeoffs and realistic timing

Published protocols commonly use a series of sessions and assess change weeks or months later, but the appropriate plan varies. Comfort, temporary reactions, response, and the need for maintenance are individual. We discuss alternatives and the point at which a surgical or medical consultation may be more suitable.