1, the formation of melanin is closely related to ultraviolet rays, so contact with strong sunlight should be reduced at ordinary times, especially after noon 12: 00, when the sunlight is strongest. Take a sunscreen umbrella and apply sunscreen when you go out. In addition, we should pay attention to the radiation of electronic products harmful to the skin.

2, people with skin diseases must be careful not to involve spicy, irritating, indigestible, fried food, as well as sweet, thick, greasy taste, away from artificial additives, careful use of hormones and contraceptives. Drink more water and eat more fruits and vegetables. Fruits and vegetables beneficial to freckle removal include cherry, pineapple, litchi, apple, red date, lemon, tomato, strawberry, cucumber, citrus, aloe, carrot, eggplant and celery. In addition, foods rich in trace elements such as copper and zinc, such as shellfish, animal liver and some acidic foods, can aggravate melanin deposition, so eat less.

3, our body is very sensitive, a little injury will react, if the disease reacts on the skin, it will show dullness, inflammation, pigmentation and so on. Therefore, if you want to maintain your skin, you must develop good living habits in peacetime. Especially if you can't stay up late, it will lead to a large amount of melanin deposition. In addition, try to have regular meals, go to bed early and get up early. Just eat for seven or eight minutes every meal. Don't eat after nine o'clock at night. Food is poisonous and especially sweet. Combining work and rest, avoiding overwork, exercising properly and cultivating good physique will shine brilliantly.

4. If you are often angry, or the mental stress is too great for a long time, ugly spots will grow on your face and arms, especially on your face. Pay attention to maintaining a happy and good mood. Traditional Chinese medicine also believes that secular desires will cause harm to the body, and the reaction on the skin is dullness, pigmentation and so on.

5. If you want to remove the deposition of melanin, you can usually massage in the blood sea, Zusanli, Neiguan, Dazhui and other parts, especially tapping the spleen and stomach meridians to help detoxify. You can also do yoga lacing in time to help dredge menstrual blood. Soaking feet at night can also detoxify. In addition, you can also choose green tea, angelica dahurica, almonds and other freckle-removing materials to make a mask and apply it to the spots.