Low-level laser treatments stimulate cell activity within the hair follicles, increasing blood flow and providing more energy to the cells. This process rejuvenates hair follicles, encouraging them to enter the anagen phase, resulting in thicker, fuller hair.
Based on the principle of photobiomodulation, this treatment describes the use of specific wavelengths of light to interact with cellular structures to promote cellular activity.
LLLT also stimulates blood flow to the treated area, supporting hair growth and promoting the growth of thicker, healthier strands.
A 2017 trial looked at the effectiveness of low-level laser therapy in women with hair loss. Researchers found that 650 million women who received red light treatments experienced a 51% increase in hair count.
Research suggests red light therapy may have a positive effect on hair follicles, but overall results are inconsistent. Red light therapy works for some people but not others. Currently, it's unclear why this difference exists, and more research is still needed to determine who is a good candidate for red light therapy