A number of studies have suggested the use of lasers as an effective way to treat alopecia, especially androgenetic alopecia and alopecia areata, but there is still a paucity of independent, peer-reviewed blinded clinical trials. The theory of hair loss laser treatment is that low-dose laser treatments invigorate circulation and relaxation, stimulating the growth of hair follicles. For those living with alopecia, laser therapy may improve hair growth and/or avoid further hair loss.