When the skin is heated to less than 42°C, the procedure will be completely safe, but the result will be comparable to the effect of applying a hot water bottle. When exposed to a temperature of 43-44°C in proteins, denaturation changes begin to occur, ensuring that the result is achieved. The safe time during which you can maintain this temperature in the tissue without the risk of burns is measured in minutes. Warming up to 45-50°C provides a distinct effect, but the time of exposure to such temperatures should already be measured in seconds.
So, for example, warming up a section of tissue to 50 should not last longer than 20 seconds during a single procedure. The maximum effect is achieved when the temperature in the tissues exceeds 50°C. Such temperatures require even more short-term exposure. The effect with these parameters is implemented in the Thermage technology. Heating of tissues above 60°C during RF lifting is not used, because it leads to severe temperature damage.
Thus, the effectiveness of the procedure depends on the qualifications of the doctor, who must take into account the individual characteristics of the patient to observe a fine line between efficiency and safety, and on the equipment used, which should allow him to accurately dose the impact. A relative contraindication is also acne, rosacea, chronic skin diseases in the acute stage, as well as recently performed contour plastic surgery, laser biorevitalization and some other cosmetic procedures.
