Melanosis may be related to heredity, ultraviolet radiation, endocrine disorders and other factors. To reduce melanosis, different treatments need to be carried out to address the cause of the disease, and attention should be paid to sun protection, vitamin C and vitamin E supplementation, avoiding late nights, applying medication, and laser treatment. 1. Avoid prolonged exposure to ultraviolet rays: When you go out, do a good job of sun protection, you can apply sunscreen or wear sunscreen clothing, use sunscreen umbrellas, etc., to reduce ultraviolet radiation, to avoid the proliferation of melanocytes, activation. 2. Eat more food rich in vitamin C and vitamin E: Vitamin C is a reducing agent, can inhibit the activity of tyrosinase, so that the skin whitening to reduce melanin deposits. Vitamin E has a strong antioxidant effect, can protect the body’s cells from free radicals, reduce melanin deposition, in addition to moisturizing the skin, skin protection. 3. Avoid staying up late: you should ensure adequate sleep, regular rest, and avoid staying up late, which can lead to endocrine disorders and cause pigmentation. 4. Apply drugs: you can use hydroquinone cream, azelaic acid and other drugs to reduce hyperpigmentation, in addition to the use of retinoids, such as all-trans retinoid cream, tazarotene gel and other drugs to regulate melanin metabolism. 5. Laser treatment: Melanin particles can be broken up by laser, and then excreted with the body’s circulation to alleviate hyperpigmentation. If the melanin pigmentation is more serious, it is recommended to go to a regular medical institution for treatment, and if you need to use medication, you should strictly follow the doctor’s instructions.