Renewderm Centre, Saifee Hospital, Prince Aly Khan Hospital, Mumbai, Maharashtra, India.
Cutis Institute of Dermatology, Srinagar, Jammu and Kashmir, India.
Indian J Dermatol Venereol Leprol. 2019 Jan-Feb;85(1):3-9. doi: 10.4103/ijdvl.IJDVL_1103_16.
Conventional and advance technologies are available for laser hair removal. Complete and permanent hair reduction is not yet possible by treatment with lasers. Ideal patient for any conventional laser hair removal treatment is one who has thick, dark terminal hair, light skin and normal hormonal status. Factors that contribute to variable outcomes in laser hair removal can be broadly divided into patient related ones and the technology related ones. Skin type, hair color, thickness and density, degree of tan, hormonal dysfunction etc., constitute the patient related factors. The wavelength, fluence, spot size and pulse duration of the laser system are the technology related factors. There are some patients who respond variably, unpredictably or poorly to laser hair removal despite ensuring that indication for treatment is appropriate with adequate parameters of the laser system. This article reviews various patient related and technology related factors which lead to variable-to-poor outcomes in laser hair removal; and various challenges and limitations of laser hair removal technology in patients with dark skin types.
传统技术和先进技术都可用于激光脱毛。通过激光治疗还不能完全和永久性地减少毛发。任何传统激光脱毛治疗的理想患者是那些具有粗黑终毛、浅色皮肤和正常激素状态的人。导致激光脱毛结果不同的因素可以大致分为患者相关因素和技术相关因素。皮肤类型、毛发颜色、厚度和密度、晒黑程度、激素功能障碍等构成了患者相关因素。激光系统的波长、能量密度、光斑大小和脉冲持续时间是技术相关因素。尽管确保治疗的适应证合适且激光系统的参数足够，但有些患者对激光脱毛的反应存在差异、不可预测或较差。本文综述了导致激光脱毛结果不同的各种患者相关和技术相关因素，以及在深色皮肤类型患者中激光脱毛技术的各种挑战和局限性。
