Can Botox be used to slim the neck?

I have been injecting Botox for aesthetic purposes for about twenty-five years. During that time I have never heard of its use for slimming the neck in the way we have been using it for the past decade to taper thick masseter muscles. We have, however, used it for many years to treat ropey cords in the neck, to tighten a saggy jawline, and for restoring the sharp chin/neck angle characteristic of youth--a technique that has come be known as the "Nefertiti Lift," named for the stepmother of King Tut who whose bust stands in the Berlin Museum and whose chiseled profile is considered an ideal of beauty. This technique involves treating the long, thin platysma muscle that sweeps like a sheet from the chest to above the mandible. It does not involve the thick muscles of the neck arising from the back. The latter should not be treated with Botox as this might lead to instability in the region. You would do well to discuss your desires with a board certified aesthetic physician. Best of luck. 

​A combination of non-surgical options like Kybella, PDO NovaThreads, Ultherapy and Thermage would do well in combination for skin tightening for the neck. VASER Liposuction (with ThermiRF, Renuvion and InMode FaceTite) is a great alternative for contouring and tightening the chin and neck and can be combined with a neck lift at the same time, if you're a candidate. I suggest getting a formal evaluation with a cosmetic dermatologist to develop a long-term treatment plan that works for you. Best, Dr. Emer.​

Botox cannot be used to slim the neck.  You can use botox in the platysmal bands to create a more chiseled jaw line but will not have a slimming effect.

Without photos and the benefit pf physical exam- it is a challenge to give the best answer. If you have sagging skin and muscle- there is no better way to reduce or eliminate it- than a full neck lift. There is no substitute. 

Thanks for your question. While you are correct that Botox can reduce the size of the masseter muscles which serve to slim the lower face, it is unfortunately not possible to slim the neck. Botox is sometimes used to reduce platysmal bands in the neck (the vertical cords that are present in some people) but is not able to reduce the overall width of the neck. The most powerful way to improve the aesthetic appearance of the neck is with a (surgical) face and neck left.