Braun Martin
Vancouver Laser & Skin Care Centre, Vancouver, BC, Canada.
J Drugs Dermatol. 2009 Nov;8(11 Suppl):s14-7.
High fluence diode lasers with contact cooling have emerged as the gold standard to remove unwanted hair. However, laser hair removal is associated with pain and side effects, especially when treating dark or tanned skin. A novel diode laser with low level fluence (5-10 J/cm2) with a high repetition rate at 10 Hz (Soprano XL in SHR mode, Alma Lasers, Chicago, IL) using multiple passes in constant motion technique was compared to traditional one pass high fluence (25-40 J/cm2) diode laser (LightSheer ET, Lumenis, Santa Clara, CA) in a prospective, randomized split-leg study on 25 patients with Fitzpatrick skin types I-V. Hair counts were done six months following the fifth treatment and were found to be comparable with a 86-91% hair reduction. There was one superficial burn with the high energy diode treatment. The rapid, multiple pass in-motion technique was faster and associated with significantly less pain. Multiple passes of diode laser at low fluences but with high average power results in permanent hair removal with less discomfort and fewer adverse effects, especially on darker skin.
带有接触式冷却的高能量密度二极管激光器已成为去除多余毛发的金标准。然而，激光脱毛会带来疼痛和副作用，尤其是在治疗深色或晒黑皮肤时。在一项针对25名 Fitzpatrick皮肤分型为I - V型患者的前瞻性、随机分腿研究中，将一种采用连续移动技术进行多次照射、低能量密度（5 - 10 J/cm²）、高重复频率（10 Hz，Alma Lasers公司的Soprano XL，处于SHR模式，伊利诺伊州芝加哥）的新型二极管激光器，与传统的单次高能量密度（25 - 40 J/cm²）二极管激光器（Lumenis公司的LightSheer ET，加利福尼亚州圣克拉拉）进行了比较。在第五次治疗后六个月进行毛发计数，发现二者毛发减少率相当，均为86 - 91%。高能量二极管治疗出现了一例浅表烧伤。快速的多次连续移动技术速度更快，且疼痛明显减轻。低能量密度但高平均功率的二极管激光器多次照射可实现永久性脱毛，不适感更小，副作用更少，尤其是对于深色皮肤。
