11 Best Red Light Therapy Hair Growth Devices 2026

What are the leading causes of hair thinning and hair loss?

Almost all men, and over half of all women, will experience hair loss in their lifetime – and the most common cause of this hair loss in all genders is “androgenetic alopecia”. Genetics can be at play, of course, and lifestyle factors like pregnancy and stress can lead to hair loss (telogen effluvium is a post-stress form of hair loss), but androgenetic alopecia is the most common cause.

What wavelength of red light is best for hair growth?

For red light therapy to encourage the stimulation of hair regrowth, the optimum…