The Effectiveness of 675 nm Wavelength Laser Therapy in the Treatment of Androgenetic Alopecia Among Indian Patients

May 2024

Byalakere Shivanna Chandrashekar, Oliver Clement Lobo, Irene Fusco, Francesca Madeddu, Tiziano Zingoni

675 nm wavelength laser therapy androgenetic alopecia AGA anagen phase terminal hair vellus hair laser therapy hair growth phase thick hair fine hair

Studysummary In this study, 14 sessions of 675 nm laser stimulation significantly improved hair count, density, and thickness in Indian patients with androgenetic alopecia, with an increase of around 17% in hair parameters over four months. Our plain-language summary of this paper — not a Tressless recommendation.

The study evaluated the efficacy of 675 nm wavelength laser therapy for treating androgenetic alopecia (AGA) in 20 Indian patients aged 23 to 57 years. Patients underwent 14 laser sessions over 4 months. Results showed significant improvements in hair count, hair density, and hair thickness, with a 17% increase in general hair parameters and a 13.91% increase in mean hair thickness. Terminal and vellus hair counts and densities also significantly increased by approximately 17%. The findings suggest that 675 nm laser therapy effectively improves AGA by enhancing the anagen phase and overall hair parameters.

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