| Deoxycholic Acid Injections | A naturally occurring bile acid is injected into fat beneath the chin. It breaks down the membranes of targeted fat cells, which are then gradually cleared by the body. | Usually several treatment sessions are needed, commonly spaced at least one month apart. The number of sessions depends on the amount of fat and the desired contour. | Gradual reduction of submental fullness and improved definition of the jawline. Changes generally become noticeable over several weeks after treatment. | Swelling, bruising, tenderness, redness, numbness, and firmness are common. Swelling may be significant and can last from several days to a few weeks. | Adults with localized fat beneath the chin, adequate skin elasticity, and realistic expectations. | It does not remove loose skin or tighten neck muscles. Injection placement requires appropriate anatomical knowledge because temporary nerve-related weakness can occur. |
| Cryolipolysis | Controlled cooling targets fat cells under the chin. The treated cells are gradually eliminated through the body’s normal inflammatory and clearance processes. | Often performed as one session, although additional treatment may be considered when fullness remains or greater reduction is desired. | A gradual, modest reduction in localized fat. Visible improvement typically develops over several weeks and may continue for a few months. | Temporary redness, swelling, bruising, tenderness, tingling, or numbness may occur. Most people can return to normal activities quickly. | People with pinchable submental fat and relatively good skin elasticity who prefer a non-injectable option. | Results are less predictable when fat is limited, skin is very loose, or the fullness is mainly caused by muscle, glands, or neck anatomy. |
| Radiofrequency Skin Tightening | Radiofrequency energy heats the deeper skin layers in a controlled manner. This may stimulate collagen remodeling and provide gradual tightening; some systems also affect superficial fat. | A series of sessions is commonly recommended, followed by maintenance treatments according to the device and clinical plan. | Subtle to moderate improvement in skin firmness and contour. Results usually develop gradually rather than immediately. | Warmth, redness, swelling, and tenderness can occur. Most treatments involve little or no interruption to daily activities. | People whose main concern is mild skin laxity, especially when the amount of excess fat is small. | It is not a substitute for surgical removal of substantial fat or markedly loose skin. Outcomes depend on energy settings, skin quality, and the treatment device. |
| Focused Ultrasound Tightening | Precisely focused ultrasound creates controlled thermal points beneath the skin, encouraging collagen contraction and remodeling in selected tissue layers. | Often performed as a single session, with reassessment after several months. Repeat treatment may be considered depending on the response. | Gradual tightening and modest contour refinement over approximately two to six months as new collagen forms. | Temporary redness, swelling, tenderness, tingling, or sensitivity may occur. Downtime is generally minimal. | People with mild to moderate laxity who need tightening more than fat reduction. | It usually provides limited fat reduction and may not significantly improve a prominent double chin caused by a larger fat volume. |
| Combined Nonsurgical Treatment | A clinician may combine a fat-reduction method with a skin-tightening method when both submental fat and mild laxity contribute to the appearance of a double chin. | The sequence and number of sessions vary according to anatomy, treatment response, and the safety requirements of each procedure. | Potentially better overall contour improvement than addressing only fat or only laxity, although results remain gradual and variable. | Side effects may reflect each individual procedure. Treatment planning should account for cumulative swelling, tenderness, and recovery time. | People with a combination of localized fat and mild skin laxity who do not want surgery. | Combining procedures does not guarantee a surgical-level result. A qualified medical professional should determine whether the methods are appropriate together. |
| Lifestyle and Weight Management | Overall weight reduction can decrease fat throughout the body, including beneath the chin, when excess body weight is a contributing factor. | Progress depends on nutrition, physical activity, health conditions, and long-term adherence. There is no reliable spot-reduction method for chin fat. | May reduce fullness when weight gain contributes to the appearance. The response varies and loose skin may remain after weight loss. | No procedure-related downtime. Weight-loss plans should be safe, sustainable, and medically supervised when appropriate. | People whose submental fullness is associated with overall weight gain or whose health would benefit from weight management. | Neck exercises cannot selectively remove chin fat, and weight loss may not correct genetically determined fullness or significant skin laxity. |