A wide range of Oriental women are whitening, and it seems to be the nature of Asian women to pursue fair and delicate skin. Because the storage of melanin in the cells of the stratum corneum of yellow skin is twice as high as that of white people, and the decomposition rate is slow, so yellow-skinned Asians are more prone to darkening and discoloration than white people. There are 7 major reasons for darkening skin, the pursuit of flawless skin women must be alert. 1, ultraviolet rays are the main cause of melanin production, leading to darkening of the skin. After the sun, the stratum corneum will thicken, causing melanin can not be discharged from the body and remain in the dermal tissue, the skin color deepened. Therefore, rejecting UV rays and preventing sun exposure is the top priority of whitening maintenance. 2, female hormones Because the production of dark spots is related to female hormone secretion, so women are most likely to grow dark spots two weeks before menstruation, and sebum secretion increases during this period, also easy to grow acne. Stress and depression slow down the metabolism and lead to melanin deposition and dark spots. Long-term stress and lack of sleep will make the skin secretion out of control, and excessive oil secretion is most likely to produce acne. Low mood also affects the autonomic nerve center, which affects the secretion of hormones. All of these can cause great harm to the skin, so if you want beauty you must relax and keep a good mood. 4, inappropriate cosmetics, wrong makeup method The choice of cosmetics and maintenance products must depend on the specific circumstances of the skin, not suitable for their own maintenance products and cosmetics and some wrong makeup methods may harm the skin, leading to the formation of dark spots. Rubbing with a powder puff when applying foundation, scrubbing the face excessively with a face wash brush or nylon towel, using scrubs and exfoliating masks excessively, removing makeup incompletely resulting in makeup and dirt residue, etc. can harm the skin, causing pigmentation and growing dark spots. The use of cosmetics that are not suitable for you will cause allergy and inflammation, which will also lead to the growth of dark spots on the skin. 5, improper diet Some photosensitive food is easy to make people grow black spots, such as after eating citrus, and then by ultraviolet radiation, it is easier than usual to form spots. Women who love to drink coffee should also pay attention to the fact that caffeine will also stimulate melanin production. 6, air pollution Air pollution will directly affect the health of the skin, isolation cream is indispensable skin care products, but the choice of isolation cream should pay attention to the difference with sunscreen. 7, electromagnetic radiation The ubiquitous electromagnetic radiation in modern life is very damaging to the skin, especially women who work for a long time in front of the computer office, high-frequency electromagnetic radiation is likely to cause a burnt and dull complexion, so that the skin loses its luster.