Am I a good candidate for Kybella? January 24, 2023 At Studio Essex, good candidates for Kybella experience the following concerns: Excess fat under the chin The appearance of a double chin Ideal candidates for Kybella are 18 years of age or older, in good general health, have moderate to severe excess submental fat, and have realistic expectations of their potential results. The best way to determine if you are a good candidate for Kybella is to schedule your private consultation with Dr. Downey or Dr. Bullocks.