BACKGROUND: Microfocused ultrasound has been shown to lift and tighten lax eyebrows, submental, and neck skin. OBJECTIVE: The aim of this study was to evaluate the safety and effectiveness of microfocused ultrasound to lift, tighten, and smooth the buttocks. MATERIALS AND METHODS: Thirty-one subjects, with buttock skin laxity, were entered into the study. The right buttock was treated with microfocused ultrasound. Subjects were evaluated for up to 180 days for improvement in overall lifting and tightening of the buttock. RESULTS: Among subjects evaluated at 180 days, 89.5% showed improvement. However, when asked, most subjects would not recommend treatment to family or friends. CONCLUSION: Although microfocused ultrasound clearly can be used to safely lift, tighten, and smooth the buttocks, better subject selection and newer developed transducers may lead to greater overall acceptance of this technique.
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Goldberg et al. (2014) studied this question.