The excimer laser and intense pulsed UVB light have been shown to be effective in treating vitiligo and hypopigmentation.Pulsed UVB light may also help people with eczema and seborrheic dermatitis.

• 受激准分子激光器和强脉冲的UVB激光已显示出治疗白斑和低色素沉着的有效性。