HIFU stands for High Intensity Focused Ultrasound. Using ultrasound energy which can safely and accurately penetrate deeper depths of the skin, this remarkable skin lifting technology heats skin to approximately 65 degrees Celsius, without damaging the skin’s surface, causing unraveling of collagen strands and promoting a wound-healing response which results in long lasting skin lifting and tightening effects. 1. It Is Not The Same As Other HIFU machines Ultherapy or Ulthera is the only FDA-approved HIFU machine for skin lifting in parts of the face as well as the décolletage. It has 3 working depths (1.5mm but more commonly the 3mm and 4.5mm are used) and is the only non-invasive method of reaching depths of the skin previously only achievable via the open facelift surgery. In recent years, new HIFU machines have appeared. Mostly Korean or China made, these treatments are being offered in beauty salons and performed by beauty technicians, rather than by a doctor. Apart from Ulthera, which has been rigorously studied for safety and efficacy, Continue Reading