Ronald G Wheeland1. 1. Department of Dermatology, University of Missouri-Columbia, Columbia, Missouri, USA. ronwheeland@gmail.com
Abstract
BACKGROUND AND OBJECTIVES: To evaluate the safety and efficacy of a home-use hair removal diode laser (TRIA Beauty, Inc., Dublin, CA) in a multiple treatment regimen. STUDY DESIGN/ MATERIALS AND METHODS: Thirteen indicated adults with naturally brown or black hair and Fitzpatrick skin type I-IV received 8 monthly treatments with the diode laser at three fluences, with a fourth area left untreated as a control. Quantitative hair counts were made at each treatment visit and periodically for 12 months after the last treatment. RESULTS: The treated sites exhibited statistically significant hair count reduction that generally increased with each treatment and remained stable during the 1 year follow-up period. The mean percent hair count reduction was 47%, 55%, and 73% at 1 month after the last treatment and 44%, 49%, and 65% at 12 months after the last treatment at fluences of 7, 12, and 20 J/cm(2) , respectively, compared to control. Eighty-six percent (86%) of subjects had greater than 30% hair reduction and 38% had >80% hair reduction at 12 months post-treatment. At the same time point, 31% of subjects reported complete (100%) hair removal and 69% reported that the hair that did regrow was less noticeable due to being finer and/or lighter. The only observed side effects were erythema and edema that were mild, transient, and self-resolving usually within a few hours. CONCLUSIONS: The home-use diode laser was safe and highly effective at permanently reducing unwanted hair.
BACKGROUND AND OBJECTIVES: To evaluate the safety and efficacy of a home-use hair removal diode laser (TRIA Beauty, Inc., Dublin, CA) in a multiple treatment regimen. STUDY DESIGN/ MATERIALS AND METHODS: Thirteen indicated adults with naturally brown or black hair and Fitzpatrick skin type I-IV received 8 monthly treatments with the diode laser at three fluences, with a fourth area left untreated as a control. Quantitative hair counts were made at each treatment visit and periodically for 12 months after the last treatment. RESULTS: The treated sites exhibited statistically significant hair count reduction that generally increased with each treatment and remained stable during the 1 year follow-up period. The mean percent hair count reduction was 47%, 55%, and 73% at 1 month after the last treatment and 44%, 49%, and 65% at 12 months after the last treatment at fluences of 7, 12, and 20 J/cm(2) , respectively, compared to control. Eighty-six percent (86%) of subjects had greater than 30% hair reduction and 38% had >80% hair reduction at 12 months post-treatment. At the same time point, 31% of subjects reported complete (100%) hair removal and 69% reported that the hair that did regrow was less noticeable due to being finer and/or lighter. The only observed side effects were erythema and edema that were mild, transient, and self-resolving usually within a few hours. CONCLUSIONS: The home-use diode laser was safe and highly effective at permanently reducing unwanted hair.
Authors: Daniel Thaysen-Petersen; Andres M Erlendsson; J F Nash; Frank Beerwerth; Peter A Philipsen; Hans C Wulf; Merete Haedersdal Journal: Lasers Med Sci Date: 2015-08-22 Impact factor: 3.161
Authors: Marc Cohen; Evan Austin; Natasha Masub; Alana Kurtti; Christopher George; Jared Jagdeo Journal: Arch Dermatol Res Date: 2021-05-03 Impact factor: 3.017