Both only recently received FDA approval. It maybe too soon to say which one is better.Both require multiple treatments, Coolmini 2 for a small neck but up to 4 for larger necks.Kybella requires 2 to 5 treatments.Both only have FDA approval for sub mental (under chin) fat and not jowl and jaw line contouring.Although both are non surgical, there can be some swelling and few days worth of downtime with both.Expect up to a 25% in fat reduction in both. Results are not as good as Smart Lipo.There is no skin tightening. Both are not ideal for those with significant skin laxity.This can be overcome with non surgical skin tightening treatments for those who want to avoid any and all surgery such as ultrasound (Ultherapy), external radiofrequency (Theramge) or focused radiofrequency (Endymed).I offer patients all the above treatment options but if they are open to laser assisted liposuction, such as Laser Lift or Smart Lipo, this becomes the preferred modality as only one treatment is required, there is only 48 hours of downtime, results are superior, plus the jaw line can be contoured, and skin tightening is accomplished with one treatment modality. Cost maybe a little more however.Ran Y. Rubinstein, MD 200 Stony Brook Court, Newburgh, New York Board Certified Facial Plastic Surgeon (ABFPRS)Fellow American Society forLaser Medicine & Surgery (ASLMS) Clinical Professor New York Presbyterian Hospital National Education Faculty (physician trainer) for: Allergan (Botox, Juvederm, Voluma), Galderma (Scultpra, Restylane, Silk), Cynosure (Cellulaze, Precision Laser Lift) & Solta (Fraxel, Thermage)Zeltiq( CoolSculpting)