This is for my son who is 19 6’ and 215. I think he is too young to do anything to his face.
FDA approval of Kybella was based on two identical randomized, multi-center, double-blind, placebo-controlled trials in healthy adults (ages 19 to 65, BMI ≤ 40 kg/m2) with moderate or severe convexity or fullness associated with submental fat. Your son's age and BMI make him an ideal candidate for Kybella. Hope that helps!
To get an accurate assessment will require in person consultations with local board-certified plastic surgeons. I do not recommend Kybella because it is inferior to liposuction for the purpose of removing subcutaneous fat.The majority of individuals seeking chin and neck liposuction have an underdeveloped mandible.Best,Mats Hagstrom, MD