Melanin pigmentation on the face may be primary pigmentation or secondary pigmentation, it is recommended to go to the dermatology department for consultation, and the treatment method is different according to different causes, primary pigmentation is mostly treated with drugs such as azelaic acid cream or laser treatment, and secondary melanin pigmentation is mostly treated with acid brushing. 1. Primary pigmentation skin diseases such as freckles and chloasma. Hydroquinone cream or azelaic acid cream can be used externally, and dermatologists should be consulted before use; pulse laser and dye laser treatment can also be used. Normally, it is necessary to pay attention to early bedtime and early rise, and reduce sun exposure. 2. Secondary melanin deposition on the face is mostly seen after facial eczema, lichen planus and other inflammatory skin diseases subside. You can use fruit acid, salicylic acid and other acids to brush acid treatment, to be operated by a professional physician. Normally, you should avoid sun exposure and can apply moisturizer to keep the facial skin moist. Secondary facial melanin precipitation is often related to the long-term use of hormone drugs, facial inflammatory diseases should be used without hormones and other mild topical drugs such as zinc oxide ointment, glycerite lotion. If you have a need to remove melanin deposits on your face, we recommend that you go to the hospital in time to get a clear picture of the cause of the problem and choose the right treatment under the guidance of your doctor, and follow the doctor’s instructions for medication.