Some foods have light-sensitive factors. When people are exposed to sunlight or other strong light after eating, the activity of melanocytes will increase, and the skin will turn black or appear spots. These foods are called photosensitive foods: lemon, radish, papaya, celery, lettuce, potato, coriander, amaranth, rape, eggplant, laver, snail, spinach, fig, nine-story pagoda, leek, red bean and mango.

And eating too much photosensitive food in summer will precipitate melanin _ pay attention.