The formation of spots

Pigmentation is very harmful to the skin. Once pigmentation occurs, it must be improved in time, otherwise it will cause many skin problems. There are some reasons for pigmentation on the skin. The most common reason is improper maintenance, such as unclean skin and incorrect use of skin care products. These will cause pigmentation on the skin. What are the specific causes of pigmentation? There are many aspects.

Many people are not very clear about the formation of pigmentation, which requires women to have a better understanding of this type of problem. When improving it, they will know what method is the best to choose. However, it also takes some time to improve pigmentation.

The formation of pigmentation:

1. Sun exposure is the number one killer of spots. Generally, the melanin deposition caused by sun exposure will be metabolized by the human body.

However, some people may have a slower metabolism or are older, which may leave melanin and form dark spots.

2. Metal poisoning caused by using expired or inferior cosmetics, such as lead, mercury, arsenic poisoning, etc.

3. When the skin is injured, foreign objects such as dust and ink are embedded in the wound: using iodine or gentian violet; or eating too much pigmented food, such as soy sauce and black fungus, will cause pigment deposition and form dark spots.

4. Problems with lifestyle habits. Bad living habits such as stress, picky eating, and lack of sleep can also increase melanin. Therefore, people with unstable sleep schedules have poor skin metabolism rates, which will affect the production of melanin particles.

The formation of freckles

1. Genetic factors: However, it is not necessarily inherited from your parents, it may be inherited from several generations. Generally speaking, freckles mostly appear on the face with fair skin.

2. Exposure to sunlight: On the one hand, the ultraviolet rays in the sunlight stimulate the frequent activity of the pigment cells under the skin, producing a large amount of melanin; on the other hand, it damages the normal metabolic function of skin cells, making it impossible for melanin to be excreted smoothly and remain on the skin, or even deposited in the dermis. Therefore, excessive sun exposure will aggravate and deepen freckles, but in winter, freckles will gradually fade.

Formation of Melasma

It is caused by the obstruction of the microcirculation between tissue cells, cell dissolution and death, and the increase of melanin to form pigmentation. The epidermis of the face is the thinnest, with the most abundant capillaries and the easiest to form pigmentation. The pigmentation area is mainly in the basal layer of the epidermis, and the melanin particles increase significantly. In more serious cases, there is also more melanin in the melanophages in the dermis. Compared with normal, the number of pigment cells, melanin formation and the activity of melanin particles have different increases.

1. Imbalance of yin and yang in the human body: First, stagnation of liver qi causes blood stasis on the face; second, weakness of the spleen and stomach causes qi and blood to fail to moisturize the face, and dampness and heat rise to the face to form spots; third, deficiency of kidney yang causes the yang qi to diffuse, and blood stasis on the face to form chloasma.

2. After pregnancy, the placenta secretes more androgen and progesterone, so pregnant women often have symmetrically distributed chloasma on their cheeks. However, after delivery, when the body's androgen and progesterone secretion returns to normal, the spots will naturally lighten or disappear for most people.

3. Drug factors: 9% to 20% of women who take oral contraceptives for a long time are prone to chloasma. Some even develop facial spots one month after taking oral contraceptives. In addition, taking drugs for high blood pressure and diabetes and eating more photosensitivity foods such as celery, coriander, carrots, etc. can also easily cause chloasma.

4. Other factors: Some chronic diseases such as chronic hepatitis and tuberculosis will lead to increased tyrosinase activity and increased melanin production, while the body's own ability to eliminate melanin will be weakened. Once melanin cannot be excreted from the body in time, chloasma will occur on the face over time; in addition, improper use of cosmetics will aggravate and accelerate the formation of chloasma. There are many causes of pigmentation.

The above is a detailed introduction to the formation of pigmentation spots. These are the reasons for the formation of pigmentation spots, and different pigmentation spots are formed differently. Therefore, when improving them, you must also choose the correct method. Women are prone to pigmentation spots in middle age, so women must take good care of their skin at this time.