AbstractBackgroundThe body contour market has grown steadily over the last years, due to the persistent demand for non‐invasive treatments for localized fat adiposities, cellulite, and skin laxity.Materials and MethodsThe purpose of this observational study was to evaluate the efficacy and safety of a new device delivering microwaves (MWs) energy for unwanted fat and cellulite reduction after a full cycle of treatments and 1 year later. A total of 45 patients with localized adiposity and/or cellulite in different body areas (inner thigh, upper arm, abdomen, culotte de cheval, buttocks), received four treatment sessions, 4 weeks apart. Photographic records and global aesthetic improvement scale (GAIS) score were performed.ResultsFor the treatment of cellulite the average GAIS score passed from 3.65 ± 0.49 at 1‐month follow‐up (1MFU) to 2.7 ± 0.66 at 1‐year follow‐up (1YFU). For the treatment of localized adiposity, the average GAIS score passed from 3.52 ± 0.51 at 1MFU to 2.82 ± 0.88 at 1YFU. No particular red area was detected either during or after the treatment. There was no mention of assessment of pain or side effects.ConclusionsThe study findings showed that MWs allow for the treatment of cellulite and localized fat adiposity in a safe and effective way, with results lasting over time up to 1 year after the end of the treatment.