Large melanin deposits on the face can be adjusted through causative treatment, symptomatic treatment and other measures. 1. Causal treatment: If it is caused by sunlight exposure, avoid sun exposure again to reduce stimulation; if it is local inflammation, it should be actively anti-inflammatory treatment; if there is an allergy, it should be selected antihistamines; if there are chronic liver and kidney disease, diabetes and so on, it should be actively treating the cause of the problem. 2. Symptomatic treatment: (1) Drug therapy: you can use hydroquinone cream, vitamin A acid ointment, cumquat ointment has a certain auxiliary effect on melanin precipitation. (2) Physical therapy: you can use a specific thermal effect through the laser to destroy melanocytes, which has a certain effect on the treatment of melanin precipitation. Large facial melanin precipitation, you need to go to the regular hospital in time to check, determine the cause of the disease, and actively follow the doctor’s instructions for treatment, do not blindly deal with their own.