I am not sure of the claims for hair growth using lasers but, I can tell you that laser therapy is no joke and really does work. My chiro uses a hot laser on my knee and it keeps me out of pain for about a month and then I go back for another treatment...only down side is that its not covered by insurance so it costs me $80 per treatment. My sister also had Plantar Fasscitis cured with 4 treatments... by a chiro no less.