Thank you for your question. Dyeing the hair before treatment will not work because the laser targets the hair follicle and the hair itself. You will need to shave your hair before treatment so it does not burn during treatment. Remember laser treatment is done in a series of 6-9 treatments to see 70%-90% reductions. Please see an experienced physician for best results. Best of Luck!
It is not necessary to dye you hair before the laser. Hair dye normally does not reach into the hair follicle. Please consult a board certified physician for the best cosmetic results. Best, Dr. Green