Effects of Low-Level Laser Therapy in the Treatment of Hormonal and Age-Related Hair Loss in Women: A 6-Month Study

February 2016 in “ Aktuelle Dermatologie ”

Laura Zanardo

Low-Level Laser Therapy LLLT hormonally related hair loss age-related hair loss anagen hair telogen hair hair density vellus hair bald spots laser therapy hair loss hair growth hair thinning

TLDR Low-Level Laser Therapy significantly improves hair density in women with hormonally and age-related hair loss.

The study aimed to objectively measure changes in hair density and the ratio of anagen to telogen hairs in women aged 40-70 with hormonally and age-related hair loss using Low-Level Laser Therapy (LLLT). Conducted over 6 months with 20 participants in the treatment group and 10 in the control group, the results showed a significant increase in overall hair density, particularly in vellus hair density (145% increase in the treatment group vs. 20% in the control group, p = 0.0151). The anagen hair rate also significantly increased in the treatment group (77.4% to 83.7%, p = 0.0003). Subjective assessments indicated significant improvements in hair loss, reduction of bald spots, and increased satisfaction with hair condition (p < 0.0001). The study concluded that LLLT significantly improved hair density and could be a safe and effective treatment for women with hormonally and age-related hair loss.

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