What is the principle behind ultrasound knife wrinkle removal?

The principle of ultrasound wrinkle removal generally involves using a fractional thermal transfer method to penetrate into the skin, stimulating the regeneration of nutrients within the skin, thereby eliminating wrinkles and tightening and lifting the skin. After undergoing ultrasound wrinkle treatment, the skin's stratum corneum becomes fragile, so it is advisable to avoid using water that is excessively hot or cold when washing the face.