2. Drink lemon juice with sugar water in moderation: Lemon contains a lot of vitamin C, calcium, phosphorus, iron, etc. Drinking lemon juice often contributes to melanin precipitation.
3. Drinking a glass of tomato juice every day or eating tomatoes often has a good effect on preventing freckle, because tomatoes are rich in glutathione, which can inhibit melanin, thus making hypopigmentation precipitate.
4. When washing your face, add 1 to 2 tablespoons of vinegar to the water, which can reduce pigment precipitation.
5. Take a tablet of vitamin C and vitamin E every day.