Fat-dissolving injection, also known as lipolysis or injectable lipolysis, is a nonsurgical cosmetic procedure designed to reduce localized fat deposits in specific target areas of the body. The most commonly used substance for this purpose is deoxycholic acid, a naturally occurring molecule in the body that aids in the breakdown and absorption of dietary fat. The procedure begins with the patient consultation, where a qualified healthcare professional assesses the suitability of the patient for the treatment, discusses potential outcomes, and identifies the target areas. On the day of the treatment, the practitioner will cleanse and potentially numb the targeted area with a local anesthetic to enhance patient comfort. Using a fine needle, the deoxycholic acid solution is then precisely injected into the fat layers beneath the skin in a series of small injections evenly distributed across the designated area.

Post-procedure, patients may experience localized swelling, bruising, redness, or tenderness, which typically subsides within a few days to weeks. Over the following weeks, the treated fat cells are progressively broken down and naturally eliminated by the body's metabolic processes, leading to a noticeable reduction in the fat deposit. Multiple treatment sessions, usually spaced several weeks apart, may be required to achieve the desired outcome, with results becoming more evident after each session. Patients are advised to follow post-treatment care instructions, which might include avoiding strenuous activities and applying ice to the treated area to manage swelling and discomfort. Results from fat-dissolving injections are generally long-lasting, provided the patient maintains a stable weight and healthy lifestyle.