Low fluence, multiple pass laser efficacious in hair removal

February 21, 2014
Low fluence, multiple pass laser efficacious in hair removal

(HealthDay)—Using diode lasers at low fluences and high average power with a multiple pass in-motion technique is an effective method for hair removal, according to a study published online Feb. 7 in Lasers in Surgery and Medicine.

Bonnie Koo, M.D., from the University of California in Irvine, and colleagues conducted a side-by-side comparison of either the legs or axillae utilizing the Soprano XL 810 nm diode in super mode (Alma Lasers; the "in-motion" device) versus the LightSheer Duet 810 nm diode (Lumenis; "single pass" device). Five treatments were performed six to eight weeks apart, with follow-up hair counts performed at one, six, and 12 months. A 10-point grading scale was used to assess pain.

The researchers found that the single pass and in-motion devices reduced hair counts by 33.5 and 40.7 percent, respectively (P = 0.2879). The single pass treatment had an average pain rating that was significantly greater than the in-motion treatment (P = 0.0007).

"This data supports the hypothesis that using diode lasers at low fluences and high average power with a multiple pass in-motion technique is an effective method for hair removal, with less pain and discomfort, while maintaining good efficacy," the authors conclude.

The study was sponsored by Alma Lasers.

Explore further: Laser hair removal: No training required?

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