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- Radio-frequency skin tightening is an aesthetic technique that uses radio frequency (RF) energy to heat skin with the purpose of stimulating cutaneous collagen, elastin and hyaluronic acid production in order to reduce the appearance of fine lines and loose skin. The technique induces tissue remodeling and production of new collagen and elastin. The process provides an alternative to facelift and other cosmetic surgeries. By manipulating skin cooling during treatment, RF can also be used for heating and reduction of fat. Currently, the most common uses of RF-based devices are to noninvasively manage and treat skin tightening of lax skin (including sagging jowls, abdomen, thighs, and arms), as well as wrinkle reduction, cellulite improvement, and body contouring. Several companies manufacture RF devices, including D-Finitive Thermage by Solta Medical, Evo by Beco Medical V-Form by Viora, Venus Freeze Plus, Venus Legacy by , VelaShape by Syneron, Exilis by BTL, and 3DEEP by Endymed. Microneedle radiofrequency is the latest form of delivery and devices include Profound by Candela lasers, Fractora, Intensif, Thermia Ablative RF Fractional by Melorin Group and Genius by Lutronic. Alternative techniques include Laser Resurfacing and certain Ultrasound alternatives. Novel non-invasive versions of radiofrequency delivery include tripolar devices such as Tripolar by Lumenis and Triactive by DEKA. Devices have different penetration depths depending on the number of electrodes (monopolar, bipolar, or unipolar). The ideal target temperature in the dermis for inducing dermal remodeling and wrinkle and laxity reduction was shown to be 67 °C. By delivering radiofrequency power until this target temperature is attained, clinical outcomes are optimized. Microneedle radiofrequency has also been FDA-approved for cellulite reduction using vertically penetrating needles that target the subnormal plane. (en)
- 射频紧肤是一种利用射頻能量加热皮肤的美容技术，目的是刺激皮肤產生膠原蛋白、弹性蛋白和透明质酸，以减少皮肤出現细纹以及松弛。该技术能诱导皮膚组织重塑和产生新的胶原蛋白和弹性蛋白。不過由于高能射频的辐射，如果該技術应用不当可能导致皮肤表面出现凹痕，甚至出現脂肪坏死和萎缩性瘢痕等情況。 (zh)
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