What is Hypnotherapy? HIFU, or HIFU, stands for High-Intensity Focused Ultrasound. Haifu is one of the relatively new methods in beauty treatments for tightening and lifting the skin, which is painless and non-invasive and can replace face lift. Ultrasound uses ultrasound. That is, the same waves that are used in ultrasound devices. However, in Haifu, these waves focus energy on a...