7D poly-lift and Thermage can both achieve the effect of skin tightening and wrinkle reduction, and the operation time is 40-60 minutes. The difference between the two is mainly for the skin level, pain, heat, effect maintenance time, technology and other differences: 1, skin level: Thermage belongs to the monopolar radio frequency, its depth of action is about 2mm, can reach the skin dermis, can not reach the subcutaneous and fascial layer. 7D poly-lift can act on different levels, the depth of about 4.5mm, can eventually reach the fascial layer, for deep anti-aging. The overall anti-aging effect is better and more comprehensive; 2. Pain: Thermage, because the heat is diffused from the epidermis to the deeper layers, through the diffusion of energy, will produce pain, so the operation requires a local numbing agent. The 7D poly-lift has a larger area of action, and the heat can quickly penetrate the epidermis and reach the fascia layer, so most people will not feel significant pain and have a higher degree of comfort; 3, heat: the temperature of Thermage is 60℃-70℃. 7D poly-lift temperature is 80℃-90℃; 4, effect maintenance time: according to individual skin quality and follow-up maintenance, the effect of Thermage will vary from person to person, and the conservative estimate of the effect can be The effect of 7D Poly-Lift can be maintained for at least 1-2 years. The most important thing is to avoid making big facial expressions after the surgery, and to pay attention to skin maintenance on a daily basis to prolong the post-operative maintenance effect as much as possible. 5. Technology: Thermage is a radio frequency technology that stimulates the deeper layers of the skin and promotes collagen regeneration. 7D Poly-Lift is the latest upgraded version of ultrasonic knife technology, i.e. high energy focused ultrasound, which stimulates fiber contraction and collagen tissue regeneration. It should be noted that no matter which method you choose, you should choose a regular medical institution, pay attention to keeping the post-operative area clean and dry, follow the medical advice for standardized care, and if there is severe pain, local redness and swelling, and oozing performance, you should seek medical attention for treatment in time to avoid serious adverse consequences.