Does HIFU Face Lifting Treatment hurt?

HIFU is one of the most innovative medical device technologies currently available for lifting the face, neck, and brow region.HIFU can be painful, depending on the settings used, the area being treated, the number of lines being laid down, and the pain tolerance of the patient. 
hifu therapy involves penetrating ultrasound energy to stimulate collagen production in the deeper dermal and sub-dermal levels, which results in micro injury to that tissue. As the tissue heals, it increases collagen and as the collagen fibers organize and shorten, a tightening effect is seen on the tissue. There can be some discomfort when the ultrasound energy is being applied but it is temporary and a good sign that collagen-building process has begun. 
All areas of the face are not equal in terms of pain sensation. Some areas on the face can be more painful than others in some individuals and the hifu lifting treatment can be delivered to those areas in stages, rather than delivering multiple lines adjacent to each other consecutively. Around the eyes and over any bony prominence tend to be much more intense. The neck region seems to be the area that tolerates the HIFU treatment the best. 
Patients can be treated with a lower energy level and increased number of lines/pulses and the discomfort/pain level is much lower. The second factor related to pain/discomfort during an hifu procedure is the type of skin being treated. Some patients experience more pain than others during the HIFU treatment. Patients with thicker skin or more dense areas will tolerate an HIFU treatment very well. 
Pain medication can be very helpful for some patients. It is not uncommon to experience a “bruised” feeling afterward but in most cases there is no visible effect on the skin as the target tissue is deeper.