title: Safety and efficacy of low fluence, high repetition rate versus high fluence, low repetition rate 810-nm diode laser for axillary hair removal in Chinese women.
abstract: BACKGROUND
  High-fluence diode lasers with contact cooling have emerged as the gold standard to remove unwanted hair. Lowering the energy should result in less pain and could theoretically affect the efficacy of the therapy.
  
  
  OBJECTIVE
  To compare the safety and efficacy of a low fluence high repetition rate 810-nm diode laser to those of a high fluence, low repetition rate diode laser for permanent axillary hair removal in Chinese women.
  
  
  METHODS
  Ninety-two Chinese women received four axillae laser hair removal treatments at 4-week intervals using the low fluence, high repetition rate 810-nm diode laser in super hair removal (SHR) mode on one side and the high fluence, low repetition rate diode laser in hair removal (HR) mode on the other side. Hair counts were done at each follow-up visit and 6-month follow-up after the final laser treatment using a "Hi Quality Hair Analysis Program System"; the immediate pain score after each treatment session was recorded by a visual analog scale.
  
  
  RESULTS
  The overall median reduction of hair was 90.2% with the 810-nm diode laser in SHR mode and 87% with the same laser in HR mode at 6-month follow-up. The median pain scores in SHR mode and in HR mode were 2.75 and 6.75, respectively.
  
  
  CONCLUSIONS
  Low fluence, high repetition rate diode laser can efficiently remove unwanted hair but also significantly improve tolerability and reduce adverse events during the course of treatment.
authors.affiliation: a Department of Dermatology , Peking University People's Hospital , Beijing China.
authors.forename: Wenhai
authors.initials: W
authors.lastname: Li
authors.affiliation: b Department of Dermatology , Peking University International Hospital , Beijing , China.
authors.forename: Chengyi
authors.initials: C
authors.lastname: Liu
authors.affiliation: a Department of Dermatology , Peking University People's Hospital , Beijing China.
authors.forename: Zhou
authors.initials: Z
authors.lastname: Chen
authors.affiliation: a Department of Dermatology , Peking University People's Hospital , Beijing China.
authors.forename: Lin
authors.initials: L
authors.lastname: Cai
authors.affiliation: a Department of Dermatology , Peking University People's Hospital , Beijing China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Zhou
authors.affiliation: a Department of Dermatology , Peking University People's Hospital , Beijing China.
authors.forename: Qianxi
authors.initials: Q
authors.lastname: Xu
authors.affiliation: a Department of Dermatology , Peking University People's Hospital , Beijing China.
authors.forename: Houmin
authors.initials: H
authors.lastname: Li
authors.affiliation: a Department of Dermatology , Peking University People's Hospital , Beijing China.
authors.forename: Jianzhong
authors.initials: J
authors.lastname: Zhang
mesh_terms: D044466:Asian People; D005260:Female; D006204:Hair Removal / Q000379:methods*; D006628:Hirsutism / Q000601:surgery*; D006801:Humans; D062325:Intense Pulsed Light Therapy / Q000379:methods*; D054023:Lasers, Semiconductor / Q000627:therapeutic use*; D016896:Treatment Outcome
keywords: China; diode laser; hair removal; high fluence single pass; low fluence multiple pass