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Hair reduction using a scanning 800 nm diode laser
W P Baugh1, J P Trafeli, D J Barnette
1Dermatology Department, Naval Medical Center-San Diego, San Diego, CA 34520, USA.
Summary
This study shows that an 800 nm diode laser effectively reduces hair. Higher laser energy (fluence) and darker hair color led to better hair reduction results.
Area of Science:
- Dermatology
- Aesthetic Medicine
- Laser Technology
Background:
- Limited research exists on factors influencing laser hair reduction efficacy.
- Key variables like fluence, light dose, hair color, and treatment number require further investigation.
Purpose of the Study:
- To assess the effectiveness and safety of a scanning 800 nm diode laser for hair reduction.
- To explore the impact of varying fluence levels on hair reduction outcomes.
Main Methods:
- An 800 nm scanning diode laser was applied to adult patients with dark hair.
- Treatments involved fluences of 24, 38, or 48 J/cm², with 1-4 sessions.
- Hair reduction was measured at 30 and 90 days post-treatment.
Main Results:
- A significant, fluence-dependent reduction in hair was observed.
- The highest fluence (48 J/cm²) yielded a mean hair reduction of 43% at 30 days and 34% at 90 days.
- Darker hair colors responded more favorably to the laser treatment.
Conclusions:
- A scanning 800 nm diode laser is a safe and effective method for hair reduction.
- Treatment outcomes are influenced by laser fluence and patient hair color.