Why Johnson ultrasonic scalpel can only be used 95 times

The reason why you can only use the Johnson ultrasonic scalpel 95 times is because overuse may irritate the skin and cause damage to the soft tissues. Johnson ultrasonic knife head which is a way to improve the skin skin texture, mainly through the ultra-powerful wavelength effect on the surface layer of the skin, to reach the deeper layers of the skin, can stimulate the deeper layers of the skin collagen can.