The latest high intensity-focused ultrasound treatment (HIFU) can penetrate through to the deeper skin layers without damaging the epidermis. This enables it to effectively treat sagging cheeks and eyelids, as well as wrinkles and lines. In contrast to conventional ultrasound devices used in cosmetics and physiotherapy, HIFU technology is able to concentrate sonic waves in a predefined area of tissue. This allows it to briefly heat the ‘focus point’ to between 50°C and 70°C, which leads to the generation of new collagen. This in turn gives the areas treated a natural-looking, filler-free lift.