A beauty seeker is very interested in a nearby beauty salon’s “690 yuan ultrasonic knife, after doing 10 years younger” activity, and asked me if I could do it? This is how I answered her: 1, ultrasonic knife belongs to three types of medical devices, beauty salons have exceeded their own business scope. 2, ultrasonic knife needs a special doctor to operate, otherwise improper operation is easy to medical accidents, beauty salons have no such personnel? And such instances are not uncommon. 3, ultrasonic knife currently has the so-called American version and Korean version, but no matter which one, in the country have not been certified. 4, ultrasonic knife for fat and mildly sagging skin has a role, and the lifting effect and maintenance time is not as beautiful as you think, need to continue multiple treatments. It is not suitable for your situation. 5, a famous hospital in Beijing to do hot lift cost tens of thousands of yuan, 690 yuan so cheap ultrasonic knife, you really dare to do? The love of beauty is in everyone’s heart, but you must be careful when choosing beauty projects, and don’t take risks with your body for the sake of cheap. collagen proliferation and reorganization in the fascial layer to build a new collagen fiber network to achieve a tightening and lifting effect in a non-invasive way, restoring skin elasticity and youthful vitality. Most people can see the effect of tissue tightening, skin tightening, skin texture improvement and wrinkle reduction in a short period of time, while better results appear after 3 months of treatment as the skin tissue needs time to produce new collagen. Some people ask: How often is the ultrasonic knife done? Will it rebound after ultrasonic knife? The effect of ultrasonic knife can be maintained for about 1 year, and the second treatment can be done 6~9 months after the first treatment. The maintenance time is related to the individual’s physical condition, aging level and post-operative maintenance. If you want to maintain it as a long-term rejuvenation, you can have a treatment every 1 year.