SMAS layer

Skin Structure

SMAS층

Short for Superficial Musculo-Aponeurotic System, the fibrous and fascial layer beneath the facial skin that connects to the muscles of expression.

What kind of layer it is

It is the layer that supports the face from a position deeper than the skin and subcutaneous fat. It is known as the layer addressed in facelift surgery, and some ultrasound lifting devices are designed to target this depth.

Good to know

The position and depth of the SMAS layer differ by area, age and body type. That is why a step of checking skin thickness and the fat layer with ultrasound before a procedure can be meaningful.

This entry is general medical information provided to aid understanding. It does not guarantee the results of any specific treatment or product, and diagnostic and treatment methods and their outcomes may differ depending on each person's condition. Please confirm the details through a medical consultation.