Body deoxycholic acid injection reduces body fat by breaking down the fat cells directly. Broken cells do not come back — they are absorbed and gone — so the treated area holds as long as you do not regain weight. It targets pockets of fat that persist despite exercise and diet.

It is given up to six times at intervals of four weeks or more. Change appears over two to three months, which is how long the body takes to process and clear the broken-down fat. Keeping the interval stops swelling and soreness from stacking, and the amount per session is divided to suit the area.

Swelling and soreness can last more than a week. That is an expected inflammatory response as the fat cells break down, but the body covers a wider area than the chin, so the burden is greater. The approved site is under the chin, so body use falls outside that approval — worth confirming at the consultation.