Melanin spots may be caused by chloasma, freckles, etc. The ways to lighten them are physical treatment, medication and general care. 1. Physical treatment: Q laser and picosecond laser are the first choice for treatment, and photon can also be used for treatment. Different diseases choose different instruments and energy size, should follow the doctor’s prescription treatment. 2. Drug therapy: such as external hydroquinone cream, oral vitamin C, tranexamic acid tablets, etc., note that the use of drugs should be under the guidance of a professional physician or pharmacist. 3. General care attention to sunscreen: usually avoid direct exposure to the sun, go out and do a good job of sunscreen. Reasonable diet, usually drink more water, eat more fresh fruits and vegetables, supplement vitamins, promote metabolism, help the body of toxins, maintain skin elasticity, thus reducing the formation of melanin spots. There are many ways to lighten melanin spots, and it is recommended that regular hospital treatment.