| Cryolipolysis | Localized subcutaneous fat | Controlled cooling damages susceptible fat cells, which are gradually removed by the body. | Approximately 15–28% reduction in the treated fat layer has been reported in clinical studies, usually assessed several weeks to months after treatment. | Often one treatment per area, although additional treatment may be considered after the result stabilizes. | Usually no significant downtime. Temporary redness, swelling, bruising, numbness, tingling, or tenderness may occur. | Small, pinchable fat pockets in people near a stable, healthy weight. | It is not a weight-loss treatment and does not remove loose skin. Rare paradoxical enlargement of the treated area has been reported. |
| Radiofrequency (RF) Body Contouring | Subcutaneous fat and skin laxity | Radiofrequency energy heats tissue, which may cause fat-cell injury and stimulate collagen remodeling. | Clinical studies generally report modest reductions in local circumference or fat thickness, but results vary substantially by device, energy settings, body area, and follow-up time. | Commonly delivered as a series of treatment sessions rather than a single procedure. | Little or no downtime. Temporary warmth, redness, swelling, or tenderness can occur; excessive heating may cause burns. | People seeking modest contour improvement with some skin-tightening benefit. | Results are usually subtle and are not directly equivalent to the 15–28% fat-layer reduction reported for cryolipolysis. |
| Focused Ultrasound | Localized subcutaneous fat | Focused acoustic energy creates thermal effects in selected fat layers while limiting exposure to surrounding tissue. | Studies have reported measurable reductions in abdominal circumference or fat thickness, but outcomes are variable and depend on treatment parameters and patient selection. | Often performed in one or more sessions, with results evaluated after a delayed remodeling period. | Usually minimal downtime. Temporary pain, redness, swelling, bruising, or localized tenderness may occur. | Well-defined fat deposits when a noninvasive option is preferred. | Not appropriate for general obesity or major weight reduction; treatment requires careful control of energy and depth. |
| Low-Level Laser Therapy | Localized superficial fat | Low-intensity light is proposed to influence fat-cell membranes without substantial heating or tissue destruction. | Some controlled studies report small circumference changes, but evidence is less consistent than for cryolipolysis and long-term durability remains uncertain. | Typically requires multiple short treatment sessions. | No meaningful downtime is generally expected. Adverse effects are usually limited when appropriate eye and skin protection is used. | People seeking conservative, low-intensity contouring with realistic expectations. | Effects are generally modest and should not be interpreted as a substitute for fat removal or weight management. |
| Electromagnetic Muscle Stimulation | Muscle contraction and muscle tone | Rapid electromagnetic stimulation induces repeated involuntary muscle contractions. | Research suggests possible improvements in abdominal or gluteal muscle tone, while changes in fat thickness are inconsistent and should not be treated as established fat-loss results. | Usually delivered in repeated sessions over several weeks. | Little downtime. Temporary muscle soreness, cramping, or fatigue may occur. | Muscle-firming goals rather than primary fat reduction. | It does not replace exercise, nutrition, or medical treatment for obesity and may be unsuitable for people with certain implanted electronic devices. |
| Liposuction | Localized subcutaneous fat | A surgical cannula physically removes fat cells from selected areas. | Generally produces a more substantial and immediate contour change than noninvasive methods, but the result depends on surgical technique, skin elasticity, and patient factors. | Usually a single surgical procedure, sometimes involving multiple areas. | Requires recovery time. Bruising, swelling, soreness, compression garments, anesthesia-related risks, contour irregularities, infection, and blood clots are possible. | Patients seeking a larger, more predictable reduction in localized fat who are suitable for surgery. | It is invasive, is not a treatment for obesity, and does not reliably correct significant loose skin. |