hereditary factor
Because of family inheritance, in some women, the spotted matrix pigment contained in hormones is unusual.
Skin pigment
When melanin gradually increases in the body, it will accumulate in the basal cells of the skin. This melanin is derived from tyrosine, which is oxidized and polymerized under the catalysis of tyrosinase. Its quantity, density and distribution vary greatly among different races, individuals and parts. People's face, back of hand, head and neck and armpit are slightly darker than other parts, indicating that there are more melanin in these parts. Acid-base imbalance: When the blood acidity in human body is high, the blood circulation will be weakened, the process of cell metabolism and life function will be blocked, and melanin can not be metabolized normally, resulting in the gradual deposition of melanin, thus forming black spots on the skin surface.
Body endocrine
Pigment metabolism is closely related to body endocrine. For example, when women have poor liver and gallbladder metabolism, gastrointestinal dysfunction or adrenal cortex dysfunction, their skin will be darker. Some women will have facial pigmentation due to ovarian dysfunction and physiological cycle disorder; During pregnancy, changes in hormone levels in the body can also stimulate the secretion of melanin.
Mental pressure
Once some women suffer from heavy mental stress, the autonomic nervous function will be out of balance, and the blood circulation will slow down, resulting in slow skin metabolism, and melanin will gradually precipitate to form pigment spots. For example, when psychological stress increases, people's faces are particularly prone to acne. The black mark left by acne will not fade, and it will become a stain if it accumulates and precipitates under the skin.
Pathological factors
Visceral dysfunction, such as lupus erythematosus, chronic alcoholism and other diseases will form spots on the face; Suffering from chronic gastrointestinal diseases and tuberculosis, chloasma will appear on the face; In patients with liver dysfunction, the nutritional decomposition is incomplete, and the skin can't excrete toxins, which promotes the increase of estrogen content in the blood and stimulates the formation of melanocytes.
Three misunderstandings
Myth 1. Frequent exfoliation promotes skin breathing.
I heard that sometimes the spots on the face are caused by the thick cuticle of facial skin, so many people choose to exfoliate frequently, thinking that this will make the skin breathe more freely.
The cutin of skin plays a very important role, which can prevent the damage of sunlight to skin tissue, prevent the invasion of foreign toxic substances to the body, effectively prevent the invasion of some microorganisms and bacteria, and resist external stimuli such as wind, rain and sun. If you exfoliate frequently, it will violate the natural metabolism of the skin. After the skin loses its keratin protection, it is prone to contact dermatitis, and the infection rate of bacteria will increase relatively.
Myth 2: homemade mask is good for the skin.
Many people think that it is economical and natural to use vegetables or fruits as a mask to remove freckles, and it will not cause any side effects on the skin.
The phenomenon of self-made facial mask is quite common in university campus, and many people have a misunderstanding that pure natural fruits and vegetables will not harm the skin. Experts believe that some foods do have the effect of whitening and removing spots on the face, but the resistance of facial skin to the external environment will be different in different seasons. Especially when the seasons change, the skin barrier function will be greatly reduced, and skin allergic reactions are more likely to occur at this time.
Myth 3: All vegetables are welcome.
Eating more vegetables is really helpful to our health, but some vegetables should be carefully eaten, such as celery, parsley and white radish, which are "sensitive" vegetables, and these vegetables make the skin that loves spots more prone to spots. You should eat more fruits and vegetables, such as kiwi fruit, strawberry, tomato, orange, cabbage and cauliflower, which can inhibit pigmentation and whiten skin.
For more skin problems, you can consult a skin care expert in Zhuang Yuan, which will bring you more skin care knowledge, scientific skin care, and become more and more beautiful.