Effect of Low-Level Light Therapy on Hair Growth and Scalp

January 2020 in “ 프로그램북(구 초록집) ”

Young Ah Cho, Ji Su Lee, Sung Min Kim, Ji Youn Hong, Jin Hee Kim, Joo Ran Hong, Hye In Cheon, Yang Won Lee, Yong Beom Choe, Kyu Joong Ahn

low-level light therapy LLLT hair growth scalp hair density hair thickness Global Aesthetic Improvement Scale GAIS sebum secretion erythema index light therapy scalp appearance

TLDR Low-level light therapy with a helmet device can increase hair density and improve scalp appearance.

In a study conducted over 24 weeks involving 50 subjects, the use of a helmet-shaped low-level light therapy (LLLT) device for 20 minutes daily was found to significantly improve hair density and thickness (p<0.001 for both). Additionally, 91.84% (n=45) of the participants showed an increase in the Global Aesthetic Improvement Scale (GAIS) score after 24 weeks of treatment, indicating an improvement in scalp appearance. However, there were no significant changes in sebum secretion and erythema index. The study concluded that LLLT administered via a helmet device can enhance hair growth and improve the appearance of the scalp.

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