HIFU is concentrated ultrasound thermal energy, precisely deposits intense, tiny points of heat into the skin, fat or muscle without affecting the surrounding tissue or skin surface. HIFU is used as a cosmetic treatment for skin toning and tightening that is non-invasive and painless. The ultrasound energy encourages the production of collagen, which results in firmer skin. HIFU technology has been used extensively in medicine, and is now being used for safe and effective aesthetic treatments.