HIFU (High Intensity Focused Ultrasound) owns the non-invasive and focused penetrating advantage. 

By HIFU technology, it can use the non-invasive way (without surgery or injection) to act on designated 

subcutaneous area. The subcutaneous tissue will produce transient heating under high-frequency vibration, 

to up to the treatment energy which makes the skin tissues cells regrown.

Working Theory:

High Intensity Focused Ultrasound (HIFU) directly delivers heat energy to skin and subcutaneous tissue that can stimulate and renew the skin's collagen and thus consequently improving the texture and reducing sagging of the skin. It literally achieves the results of a facelift or a body lifts without any invasive surgery or injections, moreover, an added bonus of this procedure is that there is no downtime. and also, it works equally well for people of all skin colour, in contrast to that of lasers and the intense puls E-lights. 

D4		D4, 4MHZfrequency used to transmit high- energy focused ultrasound to the skin, subcutaneous tissue, the ultrasound to penetrate the skin to a depth of 4.5mm, direct subcutaneous SMAS layer, forming “heat coagulation” regional, targeted to thicker skin, such as cheeks, etc.
D7		D7, 7MHZfrequencies used to transmit  high-energy focused ultrasound to the skin, subcutaneous tissue, the ultrasound to  penetrate the skin to a depth of 4.5mm, direct subcutaneous SMAS layer, targeted to thinner skin, such as the forehead, thin and neck.
M7		M7 ,for transmitting high frequency of 8 MHZ focused ultrasound energy into the dermis layer of the skin tissue,the ultrasound to penetrate the skin to a depth of 3.0mm, is responsible for activating the skin’s  dermal layer of collagen,effectively enhance the effect of the consolidation of the outline,but also improve large pores and reduce the appearance of wrinkles.