Kybella® is an FDA-approved injectable treatment that permanently reduces submental fullness - commonly known as a “double chin.” At Dr. Alexes Hazen’s Fifth Avenue practice in New York City, Kybella® is used to sculpt and refine the jawline by dissolving unwanted fat beneath the chin for a more defined, youthful profile -without surgery or downtime.

Kybella® contains deoxycholic acid, a naturally occurring molecule in the body that helps break down and absorb dietary fat. When injected into targeted areas under the chin, it destroys fat cells permanently. The body then metabolizes and eliminates them naturally, leaving the jawline smoother and more contoured.

Kybella® is ideal for adults who are bothered by fullness beneath the chin that doesn’t improve with diet or exercise. It’s suitable for both men and women with mild to moderate submental fat and good skin elasticity. Dr. Hazen will assess whether Kybella® alone - or in combination with Morpheus8 skin tightening - will provide the best aesthetic result.

Most patients require a series of 2–4 treatments, spaced about 4–6 weeks apart, to achieve optimal contouring. The number of sessions depends on your anatomy, degree of fullness, and desired definition.

Discomfort is minimal. Dr. Hazen applies topical numbing or cold compresses to ensure comfort during the injections. You may experience mild warmth, swelling, or tenderness afterward, which typically resolves within a few days.

Results begin to appear as early as 4 weeks after treatment and continue to improve over several months as your body naturally eliminates the destroyed fat cells. Once the fat cells are gone, they do not return.

There is minimal downtime. Most patients experience mild swelling or tenderness under the chin for a few days. You can return to work and normal activities right away. Dr. Hazen recommends light lymphatic massage and proper hydration to assist the body’s natural healing process.

• Avoid strenuous exercise, alcohol, or excess salt for 24–48 hours. • Keep the area clean and avoid pressure or tight clothing around the jawline. To soothe and protect your skin, Dr. Hazen recommends Hazen Essentials skincare, especially Longevity Drops and Zen Hydration Bomb, to calm inflammation and maintain elasticity.

Yes. For more comprehensive facial rejuvenation, Dr. Hazen often combines Kybella® with Morpheus8, Botox®, or dermal fillers to enhance jawline contour and skin tone. This synergistic approach creates smoother, firmer, and more youthful definition across the lower face.

Once fat cells are destroyed, they are gone permanently. However, maintaining stable weight and overall wellness will help preserve your contour. Dr. Hazen integrates longevity medicine and lifestyle optimization to help patients sustain their results long term.

Temporary swelling, redness, or tenderness at the injection site are common and subside quickly. Rarely, mild numbness or firmness may occur but resolves within a few weeks. Dr. Hazen’s precise technique minimizes these effects for a smooth recovery.

Dr. Hazen is a board-certified plastic surgeon and longevity expert known for her natural, refined approach to non-surgical rejuvenation. At her 535 Fifth Avenue clinic, she blends artistry and medical precision to enhance facial harmony and confidence -without overcorrection or downtime.

You can book a Kybella® consultation by contacting us online or by calling Dr. Hazen’s Fifth Avenue office. During your visit, she’ll design a personalized lower-face contouring plan that may include Kybella®, Morpheus8, and Hazen Essentials skincare for holistic rejuvenation and maintenance.