The most common causes of melasma are as follows

My skin has turned yellow and dark recently, and skin care products have no effect on me. This must be a common worry for all women. How does the annoying melasma come about and how to get rid of it?

Summary of the causes of melasma

There are many reasons for the formation of melasma, and multiple factors can cause or induce melasma. It is closely related to race and genetics, and is more common in people with a family history or genetic history. The pathogenic mechanism is that when sunlight shines on the face, the ultraviolet rays in the sunlight act on the melanocytes in the skin, activating their functions, causing excessive production of melanin, which is deposited in the basal layer of the skin's epidermis, causing chloasma to appear on the skin.

The most common reasons are:

Disease factors. Some chronic diseases, such as chronic hepatitis, hyperthyroidism, tuberculosis, chronic alcoholism and tumors, can interfere with endocrine metabolism and can also cause chloasma. In addition, studies have shown that long-term mental stress, depression and other negative emotions can also affect the body's normal endocrine system, causing chloasma to worsen and persist.

Drug factors. Many women take oral contraceptives for a long time, or take medicines for high blood pressure and diabetes, and like to eat foods that are highly photosensitive, such as celery, coriander, carrots, etc. These may cause chloasma on the face, so those who seek beauty must pay attention.

Pregnancy effects. During pregnancy, hormones in the body change, and pregnant women are prone to chloasma on their cheeks. This is mainly due to changes in estrogen in the body during pregnancy. However, the spots that appear in this situation may disappear after giving birth.