One, photographic food (English name Photographic food) is rich in copper, iron, zinc and other metal elements, these metal elements can directly or indirectly increase the production of melanin related to tyrosine, tyrosinase and dopamine quinone and other substances in the number and activity, eat more of these foods will make the skin more susceptible to ultraviolet aggression and become black or spot.
The sun's ultraviolet rays will stimulate the skin to produce a large number of oxidized free radicals, and free radicals will destroy the skin cell tissues and accelerate the oxidation reaction of melanin production, so that the skin will become dull, rough and lose elasticity, but also make the skin's resistance to reduce. Light-sensitive foods contain photosensitive substances, the ultraviolet irradiation, the skin is more likely to appear allergies, inflammation, pigmentation and other phenomena.
Three, common photoreceptor foods are: sweet potatoes, lemon, carrots, papaya, celery, lettuce, potatoes, parsley, amaranth, oilseed rape, oranges, nori, snails, spinach, figs, nine layers of pagoda, leeks, red beans, beans generally want to become fair skin, should be eaten less (not over-eating) this kind of photoreceptor food, but also can be consumed for dinner a little bit, should not be consumed in the bright light activities, to prevent the skin from darkening. The first thing you need to do is to make sure that your skin is not darkened.