1. mineral water: mineral water is rich in minerals and trace elements. Drinking more mineral water is helpful to promote metabolism, enhance immunity and improve skin condition. Many high-quality mineral waters also contain low pH value, which can "clean" the skin.

2. Green tea: Green tea is rich in tea polyphenols, which helps to inhibit the formation of human peroxidase and free radicals, thus achieving the effect of whitening skin.

3. Mango, grapefruit and cherry: These fruits are rich in vitamin C, which can improve the whitening degree of skin from the inside.

In short, a balanced diet, regular exercise and moderate rest are the most effective whitening methods, and drinking water is just one of them. Don't just focus on one aspect and ignore the overall health care method. At the same time, we should also pay attention to avoid exposure, maintain a good mood and establish good living habits.