1, drug therapy: There are many reasons for long spots on the face, and patients need to use different drugs for treatment according to different reasons. The commonly used drugs in clinic are aminomethanesulfonic acid, nitrogen mustard ethanol, tretinoin, vitamin C and vitamin E, hydroquinone cream and so on.

2. Physiotherapy: Physical methods such as intense pulsed light, ruby laser and liquid nitrogen freezing can destroy pigment particles, reduce pigmentation, and achieve the effect of lightening spots and removing spots.