Stubborn fat under the chin that won't budge with diet or exercise? Fat-dissolving injections use an FDA-approved ingredient to permanently break down fat cells — here's what the clinical research actually shows, who's a good candidate, and what results really look like.

B12, L-Carnitine, and Immunity Boost injections are some of our most-requested wellness treatments — and some of the most misunderstood. Here's an honest, evidence-based look at what each one can and can't do, and who's actually likely to benefit