Evaluation of Low Level Light Therapy (LLLT) as a Primary Therapy for Non-Specific Alopecia of the Eyebrow in Women

This study on LLLT aims to define the safety and physiologic effects that occur when the human hair follicle and surrounding tissue structures are exposed to this type of radiation. Thus far, all reports on the efficacy of laser light and LED light in this area, have been, in large part, unsupported by multi-center, randomized, double blind, controlled studies. To properly identify the effects in human subjects, exposure to LLLT is not sufficient. The analysis of the non-radiated and radiated tissues is required to elucidate the tissue response and efficacy of the laser therapy. The theory that is widely accepted is that the mitochondria are the powerhouse of the stem cells that cause hair growth. The LLLT "turns on" the nutrient pump process that energizes the mitochondria, which leads to an increase in ATP and subsequent reversal of hair follicles from the dormant stage of growth called telogen, to the active growth stage called anagen.