title: Hair removal using an 810 nm gallium aluminum arsenide semiconductor diode laser: A preliminary study.
abstract: BACKGROUND
  Laser hair removal is a popular treatment method for removing unwanted hair. Several laser systems are available for laser hair removal. The gallium aluminum arsenide semiconductor diode (GAASD) laser is one of the newer laser modalities to be studied.
  
  
  OBJECTIVE
  To evaluate the efficacy of the GAASD laser system in removing unwanted hair.
  
  
  METHODS
  Twenty-six patients with brown or black hair growth were treated with the GAASD laser at fluences of 20-80 J/cm2. Hair regrowth was measured 4 weeks after the first treatment, 4 weeks after the second treatment, 4 weeks after the third treatment, and 4 weeks, 8 weeks, and 8 months after the fourth treatment.
  
  
  CONCLUSIONS
  GAASD laser treatment resulted in hair growth delay in all treated regions. Repeated laser treatments did not produce an increased number of vellus hairs. The percentage of hair reduction fluctuated between 5% and 13% with the second or third treatment averaging the highest percent reduction. In all cases, the percentage of hair reduction of the treatment sites evaluated at 8 months after the fourth treatment was less than both the second and third treatments (highest average percent reduction) and the fourth (last) treatment.
authors.affiliation: University of California, Los Angeles, USA.
authors.forename: R M
authors.initials: RM
authors.lastname: Williams
authors.forename: H B
authors.initials: HB
authors.lastname: Gladstone
authors.forename: R L
authors.initials: RL
authors.lastname: Moy
mesh_terms: D000328:Adult; D005260:Female; D006204:Hair Removal / Q000379:methods*; D006801:Humans; D017495:Hyperpigmentation / Q000209:etiology; D053685:Laser Therapy / Q000379:methods*; D008297:Male; D010865:Pilot Projects; D016896:Treatment Outcome