Sometimes fullness beneath the chin remains even when your weight is stable. If that fullness comes from a treatable pocket of fat, Kybella may offer a nonsurgical way to improve the contour of the area.
The first step is determining what is actually creating the fullness. Fat, loose skin, muscle anatomy, and underlying facial structure can all influence how the area looks—and they do not respond to the same treatment.
What is Kybella?
Kybella is an injectable prescription treatment containing synthetic deoxycholic acid. Deoxycholic acid is a bile acid naturally present in the body that helps break down and absorb dietary fat.
When injected into the appropriate fat beneath the chin, Kybella disrupts fat-cell membranes, destroying the treated cells. The body gradually clears the cellular debris through its normal inflammatory and healing processes.
Kybella is FDA-approved to improve the appearance of moderate to severe fullness associated with fat beneath the chin in adults.
Does Kybella permanently remove fat?
The fat cells destroyed by treatment can no longer store fat. However, that does not mean the appearance of the area can never change.
Remaining fat cells can enlarge with weight gain, and skin laxity and other age-related changes can continue. Maintaining a stable weight helps preserve the improvement.
Kybella reduces fat; it is not a weight-loss treatment or a substitute for treating significant loose skin.
Who is a good candidate?
A suitable candidate has fullness caused by fat in the appropriate treatment layer beneath the chin, along with anatomy and skin quality that make fat reduction worthwhile.
During consultation, I assess the area and review your medical history, previous procedures, medications, and any history of swallowing difficulties. Sometimes another treatment—or a surgical consultation—is more appropriate for the result you want.
What does treatment involve?
Kybella is administered through a series of small injections into the selected fat beneath the chin. The amount used and number of sessions depend on your anatomy, response, and goals.
The prescribing information allows up to six treatment sessions, spaced at least one month apart. Not everyone needs the same number of sessions, and results develop gradually.
Swelling, bruising, discomfort, numbness, redness, and firmness can occur. Swelling may be noticeable, so treatment should be planned around your schedule rather than treated as a last-minute appointment before an important event.
What are the important risks?
Precise placement matters. Kybella can injure surrounding tissues if injected incorrectly; skin and muscle are not immune to its effects.
Important risks include nerve injury that can cause an uneven smile, difficulty swallowing, skin ulceration, tissue necrosis, infection, and persistent nodules or masses. Your provider should explain these risks and what symptoms require prompt attention.
Can Kybella treat fat elsewhere?
Kybella is not FDA-approved for fat reduction outside the area beneath the chin, and its prescribing information does not recommend those uses. Updated September 2026 labeling includes warnings about serious adverse reactions following treatment outside this region.
Is Kybella right for you?
At Modern Aesthetics in San Jose, I start by assessing what is causing the fullness and whether reducing fat is likely to improve your contour. Schedule a consultation to discuss your options, expected recovery, and an individualized treatment plan.
Updated October 23, 2026.