First of all, ultrasound (ultrasonic ) is high frequency sound waves, between 800,000 Hz and 2,000,000 Hz. This cannot be heard by humans and this is why you will not hear Ultra Renew when it is working in ultrasonic mode.
Therapeutic ultrasound frequency ranges from 1-3 MHz. The higher the frequency, the less effective the ultrasound is. Ergo, 2 is stronger than 5. The Ultra Renew Plus is in the 3mz range and the ultrasound penetrates less than 2 mm.
As the ultrasound waves pass from the treatment head to the skin they cause a vibration of the surrounding tissues, particularly those that contain collagen. You will not actually feel vibrations on the surface of the skin and the device will not feel hot against the skin.The vibration massages the surrounding tissue, which then increases oxygen to the cells and aids in the removal of waste. The skin is should feel instantly energized, rosy and firm.
There are theories that the non-thermal actions of ultrasound are also important and beneficial. The idea is that the rapid oscillation of tissue created by ultrasound energy promotes movement of fluid waves against cells, facilitating movement between the inner and outer cells and thereby increased fibroblastic activity and collagen formation.
In any case, there are theories that the non-thermal actions of ultrasound are also important and beneficial. Rapid oscillation of tissue and fluid as a result of ultrasound energy promotes movement of fluid waves against cells. This may result in alterations of the cellular membrane permeability and ion concentrations between the inner and outer cell wall, which may stimulate an intracellular cascade resulting in increased fibroblastic activity and collagen formation.
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