The causes of facial pigmentation melanin include freckles, pigmented nevi, chloasma, etc., which can be removed by medication, laser treatment and surgery. 1. Freckles: because of genetic factors leading to facial pigmentation spots, the commonly used treatments include Q-switched ruby laser with a wavelength of 694nm, emerald green gemstone laser with a wavelength of 755nm, or IPL treatment, which has a better efficacy, and attention should be paid to the avoidance of light after the operation. 2. Pigmented nevus: due to various factors, the nevus cells increase a lot, at this time, carbon dioxide laser vaporization can be given to remove the treatment. 3. Melasma: mostly related to heredity, sunshine, etc., which can also lead to color spots on the face, it can be treated by topical medication with decolorizing agents such as 2%-5% hydroquinone cream, 4% tretinoin, 15%-20% azelaic acid cream and compound arbutin cream, etc., which can inhibit the activity of tyrosinase and reduce the production of color pigments. In addition, you can also use laser treatment such as intense pulsed light, Nd:YAG laser. Finally, the phenomenon of pigmentation melanin on the face, please consult a doctor in time, the above drugs please follow the doctor’s instructions.