Factors such as UV stimulation, stressful life and irregular work and rest can cause the formation of skin melanin. Therefore, lightening skin melanin can be adjusted through diet and lifestyle habits, applying drugs and other methods. ⒈ adjust the diet and habits: light skin melanin in daily life is recommended to light diet, you can eat more vitamin-rich foods, such as cucumbers, tomatoes, oranges, strawberries and cherries. When you go out, you should do a good job of daily sun protection, such as umbrellas, wear sunscreen clothing. Normally, you should avoid staying up late, regular work and rest, so as not to accelerate the formation of melanin in the skin. 2. Apply drugs: you can use some drugs that inhibit melanin synthesis externally under the guidance of a doctor, such as vitamin E milk, tretinoin cream, azelaic acid cream, hydroquinone cream and so on. If the skin melanin is more, the formation of hyperpigmentation, it is recommended to go to the hospital in a timely manner, if you need to use drugs, should be used under the guidance of a doctor to avoid adverse effects.