Laser treatments are only approved by the FDA for "permanent hair reduction" NOT "permanent hair removal". Laser may cause hyper pigmentation and hypo pigmentation. Hyperpigmentation is darkening of the skin that may occur after the laser hair removal. The laser treatment stimulates melanin production creating a reaction similar to suntan. Hypopigmentation on the other hand refers to the lightening of skin that occurs after the laser treatment. The absorption of laser light can inhibit the melanin production, leading to a loss of pigment.