Why is SMASectomy not commonly done during rhinoplasty?

The nasal SMAS layer is mostly along the side walls of the nose, and this consist largely of the dilator nasal muscles. When somebody has thick skin that limits tip definition, we may perform a defatting of the nasal tip skin to make it a bit thinner. Some people have extensive sebaceous glands underneath the nasal tip skin, and during an external rhinoplasty procedure, this may be dealt with. I hope this answers your question. Sincerely, Dr. Joseph

While a SMASectomy is not a routine procedure in rhinoplasty it is can be done to address fullness in the Superficial Musculoaponeurotic System (SMAS) can be beneficial for certain patients seeking nasal refinement. Manipulating this soft tissue is a crucial aspect of rhinoplasty to achieve desired aesthetic outcomes.

I think many rhinoplasty surgeons will routinely do this, esp for thicker skin nose patients. It is not that novel of a procedure that you would have to go hunting to find specific people who do it. If you are concerned, you could always specifically ask any surgeon you consult with.