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Hair removal with long pulsed diode lasers: a comparison between two systems with different pulse structures
Eli Janne Fiskerstrand1, Lars O Svaasand, J Stuart Nelson
1Center for Esthetic Laser Surgery, NO-7010 Trondheim, Norway. info@estetisklaserkirurgi.no
Lasers in Surgery and Medicine
|May 27, 2003
Summary
Two diode lasers showed similar hair removal effectiveness, with approximately 49% hair reduction after six months. Both lasers were safe for skin, though acute side effects varied slightly.
Area of Science:
- Dermatology
- Laser Physics
- Aesthetic Medicine
Background:
- Long-pulsed diode lasers are common for hair removal.
- Clinical efficacy and side effects of specific devices require comparative analysis.
Purpose of the Study:
- To compare the hair removal efficacy and side effects of two diode lasers: MedioStar and LightSheer.
- To evaluate treatments at a standard clinical radiant exposure of 35 J/cm².
Main Methods:
- Prospective clinical study involving 29 patients with upper lip hair.
- Randomized split-lip design comparing MedioStar and LightSheer lasers.
- Three treatment sessions at 6-8 week intervals, with hair reduction and side effects assessed post-treatment.
Main Results:
- Average hair reduction was 49% for MedioStar and 48% for LightSheer at 6 months.
- No significant scarring or pigmentary changes were observed with either laser.
- Differences in acute side effects, such as erythema and burned hairs, were noted.
Conclusions:
- No statistically significant difference in hair removal efficacy between the MedioStar and LightSheer diode lasers.
- Results align with mathematical modeling for predicting laser hair removal outcomes.
- Mathematical models can estimate efficacy and adverse effects based on hair characteristics and laser parameters.