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Kybella is the only FDA-approved injectable that permanently destroys fat cells under the chin. It’s a targeted, non-surgical solution for a “double chin,” and because the fat cells are gone for good, the results don’t come back as long as you maintain a stable weight.
How Kybella works
Kybella is synthetic deoxycholic acid, a molecule your body already produces to help break down dietary fat. When injected directly into the submental fat (the fat pocket beneath your chin), it dissolves the fat cell membranes. Your body then clears the destroyed cells naturally over the following weeks via the lymphatic system.
Because the fat cells are physically destroyed (not just shrunken), the results are permanent at the treated area, as long as you don’t gain significant weight afterward.
What to expect during treatment
A session is fast, 15 to 20 minutes:
Provider marks injection grid on the under-chin fat (typically 20–50 small injections per session)
Numbing or ice is applied
Kybella is injected in a precise grid pattern across the fat pocket
You leave with a cold pack and instructions for the next several days
The swelling is real. Plan for 1–2 weeks of significant under-chin swelling, sometimes described as a “bullfrog” appearance. Bruising and tenderness are also common. Most people schedule treatment when they can stay low-key for a week or two (working from home is ideal).
Weeks 3–6: Swelling resolves, early reduction visible
Weeks 4–6: Schedule next session
After full series (2–4 sessions): Final result. In the FDA trials, 43% of treated patients had at least a 10% reduction in under-chin fat on MRI, versus 5% on placebo
Total treatment is 2–4 sessions for most people, sometimes up to 6 for severe fullness.
Is Kybella right for you?
Strong candidates have:
Mild to moderate fullness under the chin (a “double chin”)
Good skin elasticity: your skin will retract after the fat is removed
No significant excess skin: Kybella won’t tighten loose skin
Tolerance for visible recovery: the swelling is real and obvious
Stable weight: significant weight gain after treatment can stretch remaining fat cells
It’s not the right call for:
Severe submental fullness (chin liposuction may be more efficient)
People who can’t take 1–2 weeks of visible swelling between sessions
Risks and side effects
Common (essentially universal): swelling, bruising, tenderness, numbness, redness. All resolve within 1–2 weeks per session.
Less common but important: nerve injury (especially the marginal mandibular nerve, which can cause a temporary asymmetric smile) and trouble swallowing. These are rare and almost always temporary, but they’re why provider expertise matters a lot: proper injection placement avoids these complications.
What affects the cost
Number of sessions. Most people need 2–4; sometimes 6. Total budget typically $1,500–$6,000+.
Amount of Kybella per session. Larger fat pockets need more vials.
Provider expertise. Choose someone who does Kybella regularly. The injection placement is precise to avoid nerves.
City + clinic. Major metros price at the upper range.
Many clinics offer Kybella package discounts for committing to the full series. If you’re confident in your candidate status after consultation, packaging saves 10–20%.
Browse Kybella providers near you on ClinicCompass to compare local pricing and book a consultation.
Where to compare Kybella
Kybella is priced per vial, and the number of vials depends on the treatment area. Compare Los Angeles, Miami, Dallas, and Seattle. If you’re deciding between Kybella and a device-based option for submental fat, compare it against CoolSculpting.
Why people choose Kybella
Permanently destroys treated fat cells (they don't come back)
Non-surgical alternative to chin liposuction
FDA-approved specifically for under-chin fat
Quick treatment (~15–20 minutes per session)
Are you a good candidate?
Mild to moderate submental (under-chin) fullness, good skin elasticity, and willingness to tolerate visible swelling between sessions
By location
Find Kybella near you
2,946 clinics across 458 cities list Kybella on ClinicCompass. 1,793 of them (61%) say on their own websites that they offer financing or payment plans;
ask about approval and interest before you book.
Kybella is synthetic deoxycholic acid, a molecule your body naturally produces to break down dietary fat. When injected into the fat under your chin, it dissolves the fat cell membranes. Your body then clears the destroyed cells via the lymphatic system over the following weeks. Since the cells are gone for good, results are permanent.
How many sessions will I need?
Most people need 2–4 treatment sessions spaced 4–6 weeks apart. Some need up to 6 sessions for severe fullness. Your provider will assess your "before" and recommend a treatment plan during consultation.
How bad is the swelling?
Significant. Plan for 1–2 weeks of visible "bullfrog" swelling under the chin after each session, which is the body's response to the destroyed fat cells. Bruising and tenderness are also common. Most people schedule sessions when they can lay low for a week or two.
Does Kybella hurt?
There's burning and stinging during the injections that lasts a few minutes. Many providers use ice or numbing cream. The 12–24 hours after treatment can be tender and uncomfortable, eased with cold packs and OTC pain relievers.
Will Kybella tighten my skin too?
Not significantly. Kybella destroys fat; it doesn't tighten skin. If you have loose or sagging skin under your chin, you may want to combine Kybella with a skin tightening treatment (Morpheus8, Sofwave, or Ultherapy) or consider chin liposuction if skin laxity is significant.
How does Kybella compare to CoolSculpting for chin fat?
CoolSculpting also has an FDA-approved chin applicator. Both work; both require multiple sessions; both produce permanent fat reduction. Kybella is injection-based (no device pulling on skin), while CoolSculpting uses cold and suction. Kybella often has more visible post-treatment swelling. Cost is similar. Your provider's experience with each may inform the recommendation.
Sources
Where this information comes from
Clinical facts on this page are checked against these primary sources.
1.NDA 206333 Approval Letter: Kybella (deoxycholic acid) injection, 10 mg/mL, U.S. Food and Drug AdministrationFDA approval of Kybella (April 29, 2015) for improvement in the appearance of moderate to severe convexity or fullness associated with submental fat in adults, and that marginal mandibular nerve injury and dysphagia are FDA-recognized serious risks.
2.KYBELLA (deoxycholic acid) injection, solution - Prescribing Information, U.S. National Library of Medicine (DailyMed), FDA-approved labelingHow Kybella works (a cytolytic drug that physically destroys the fat cell membrane), the treatment schedule (up to 50 injections per session, up to 6 single treatments at intervals no less than 1 month apart), the most common side effects (injection site swelling, bruising, pain, numbness and redness), the serious risks of marginal mandibular nerve injury and dysphagia, and that it is contraindicated with infection at the injection site or a history of dysphagia.
4.Non-invasive fat removal: What can you expect?, American Academy of DermatologyHow the chin injections work (a bile-acid-like compound that dissolves fat cells) and that because the targeted fat cells are destroyed, the results are permanent.
5.Injection Lipolysis, American Society of Plastic SurgeonsKybella (deoxycholic acid) is FDA-approved injection lipolysis for chin fat, typical treatment count of at least two and up to six sessions spaced four to six weeks apart, common side effects of swelling/bruising/pain/redness/hardness, the risks of nerve injury causing an uneven smile and rare difficulty swallowing, and that patients with loose or poorly toned skin are not good candidates.
6.Injectable Deoxycholic Acid, American Society for Dermatologic SurgeryTypical treatment count and spacing (3 to 6 sessions spaced every 4 to 6 weeks), common side effects (swelling, bruising, bleeding, hardness, numbness), the serious risks of facial weakness/uneven smile and difficulty swallowing, and who should not receive it (current infection, blood-clotting problems, swallowing difficulties, ingredient allergy, or pregnancy/breastfeeding).
