Kybella contains synthetic deoxycholic acid — a molecule your body naturally uses to break down dietary fat. When injected into submental fat (the fat pad under the chin), it permanently disrupts fat cell membranes, destroying the cells.
Once those fat cells are destroyed, they cannot regenerate or store fat again. This is why Kybella results are considered permanent — not just reduction, but permanent cell elimination. The body clears the destroyed fat through normal metabolic processes over 4–6 weeks.
In clinical trials, 68.2% of Kybella patients reported high satisfaction with their facial appearance, compared to 20.4% of placebo patients. Two-thirds required 2 treatment sessions; most patients achieve optimal results in 2–4 sessions.
For men, submental fat disproportionately blunts jawline definition — one of the key markers of masculine facial aesthetics. Kybella is often transformative for men whose chin fat resists all other measures.