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Hair removal with an 800-nm pulsed diode laser
V B Campos1, C C Dierickx, W A Farinelli
1Wellman Laboratories of Photomedicine, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston 02114, USA.
Journal of the American Academy of Dermatology
|August 23, 2000
Summary
The 800-nm diode laser effectively reduces unwanted hair, with 59% experiencing sparse regrowth. While transient pigmentary changes occurred, the procedure is safe and efficient for long-term hair reduction.
Area of Science:
- Dermatology
- Aesthetic Medicine
- Laser Technology
Background:
- Laser hair removal is an emerging cosmetic procedure.
- Assessing novel laser systems is crucial for clinical application.
Purpose of the Study:
- To evaluate the efficacy and safety of a high-power, pulsed 800-nm diode laser array.
- To determine the effectiveness of this laser system for unwanted hair removal.
Main Methods:
- 38 subjects received treatments using an 800-nm diode laser prototype.
- Fluences ranged from 10 to 40 J/cm(2) with an average of 2.7 treatments.
- Hair loss was assessed via blinded clinical photograph analysis at a mean of 8.7 months post-treatment.
Main Results:
- 59% of subjects showed sparse hair regrowth at follow-up.
- Higher fluences and multiple treatments correlated with improved long-term efficacy.
- Transient pigmentary changes affected 29% of subjects, notably in darker skin types (IV-VI).
Conclusions:
- The 800-nm diode laser offers an efficient and safe method for hair reduction.
- Adverse pigmentary effects are temporary, indicating a favorable safety profile.