Under the HIFU treatment, ultrasound energy is focused to target the layers of your skin below the surface. This energy causes the body tissue to rapidly heat up. On reaching a certain temperature, the cells in that area undergo cellular damage. However, this damage stimulates them to produce higher amount of collagen, a protein providing the skin, its structure. With more collagen production, your skin becomes more firm, tight and free from wrinkles.
Do not worry; there is really no damage to the upper layers or nearby tissues of your skin. This treatment is not recommended for people with open skin lesions or infections.