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Safety and efficacy of low-fluence, high-repetition rate versus high-fluence, low-repetition rate 810-nm diode laser for permanent hair removal--a split-face comparison study.

AbstractBACKGROUND:
This study was designed to evaluate the hypothesis that low-level fluences done repetitively on a hair follicle will produce permanent hair removal with less discomfort and fewer side effects than a single high-fluence pulse.
OBJECTIVE:
To compare the safety and efficacy of a low-fluence, high-repetition rate versus a high-fluence, low-repetition rate 810-nm diode laser for permanent hair reduction in patients with facial hirsutism.
METHODS:
Forty-two female patients with confirmed polycystic ovaries by ultrasonography with facial hirsutism were subjected to the low-fluence, high-repetition Soprano® XL laser in SHR mode and the LightSheer™ laser on each side of the face using preset parameters once a month for six sessions. Hair counts were done at the end of the sixth session using a 'Hi Quality Hair Analysis Program System' and the pain score was recorded by a visual analog scale.
RESULTS:
The overall median reduction of hair was 90.5% with the Soprano XL and 85% with the LightSheer, with a standard deviation of 7 and 8.5 respectively.
DISCUSSION:
This new technology, with low fluence and high repetition, showed a statistically insignificant increase in hair reduction compared to the LightSheer, but did show a significant reduction in hair thickness and a low pain score.
AuthorsGanesh S Pai, Pavritha S Bhat, Hema Mallya, Michael Gold
JournalJournal of cosmetic and laser therapy : official publication of the European Society for Laser Dermatology (J Cosmet Laser Ther) Vol. 13 Issue 4 Pg. 134-7 (Aug 2011) ISSN: 1476-4180 [Electronic] England
PMID21692640 (Publication Type: Comparative Study, Journal Article, Randomized Controlled Trial)
Topics
  • Adult
  • Face (surgery)
  • Female
  • Hair Removal (methods)
  • Hirsutism (surgery)
  • Humans
  • Lasers, Semiconductor (adverse effects, therapeutic use)
  • Prospective Studies
  • Treatment Outcome
  • Young Adult

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