Photobiomodulation as a therapy for alopecia

Abstract

Androgenetic alopecia (AGA) and alopecia areata (AA) are frequent causes of dermatological consultation.

Photobiomodulation is a promising therapy for the treatment of different types of alopecia. Hair regeneration would be produced by an increase in ATP production, inhibition of inflammation, increased blood circulation, as well as a greater expression of different growth factors.

Red light was used for AGA, ultraviolet light for AA, and infrared light for both types of alopecia.

An increase in the density and diameter of the hair was evidenced.

Ultraviolet light was effective for the treatment of AA, red for AGA, and infrared for both.

Since different wavelengths act by different mechanisms, the combination of these is an option for future research in the treatment of alopecia.