Kybella permanently destroys fat cells under your chin — no surgery, no scalpel. Most patients need 2–4 sessions to see full results. Once those fat cells are gone, they don't come back.
Find a Kybella provider near youKybella (deoxycholic acid) is an injectable that permanently destroys fat cell membranes on contact. Your body clears the debris over 4–6 weeks, leaving behind less fat and a more defined jawline. It's the only FDA-approved injectable specifically cleared for submental fat — the stubborn pocket under your chin that diet and exercise rarely touch.
Common treatment areas include:
Kybella is not a fit if your double chin comes primarily from loose or sagging skin — it destroys fat, not excess skin. It's also not approved for patients under 18. If skin laxity is your main concern, a neck lift or skin-tightening treatment is the better conversation to have with your provider.
Ideal candidates are adults at or near a stable weight with moderate submental fat — the kind that stays put regardless of how clean you eat or how much you work out. Kybella works best when the issue is clearly fat, not skin. If you can pinch it, it's probably treatable. You should also be realistic about the timeline: results build over multiple sessions spanning several months.
Kybella is not the right call if your double chin is mainly loose skin, if you have an active infection in the treatment area, or if you have pre-existing difficulty swallowing. Prior neck surgery can alter the anatomy and complicate safe injection placement — always disclose this upfront. Not approved for use under age 18.
Most side effects are localized and expected. In clinical trials, 87% of patients experienced swelling, 72% bruising, 70% pain, and 66% numbness at the injection site. This is the inflammatory process breaking down fat cells — it's doing its job. Swelling typically peaks at days 2–3 and resolves within 2 weeks. Plan around any major events or public appearances.
The more serious risk to know: marginal mandibular nerve injury occurred in 4% of clinical trial subjects, showing up as an asymmetric smile or jaw muscle weakness. Every single case resolved on its own — median recovery was 44 days. Skin ulceration and necrosis have been reported from injections placed too superficially. Difficulty swallowing (dysphagia) occurred in 2% of patients and resolved without treatment. These risks drop significantly when your provider has real experience with submental anatomy.
Contact your provider immediately if you experience: difficulty swallowing that's getting worse instead of better, facial weakness that persists beyond a few days, skin breakdown or open sores at injection sites, or signs of infection (spreading redness, warmth, or fever).
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