What are the causes and prevention methods of sun spots? How to prevent sun spots

Sunburn is a skin disease. There is a kind of melanocyte in the human skin epidermis. Under certain circumstances, it will be activated and release melanin. When the skin is exposed to strong sunlight or other strong light, it will cause an acute damaging reaction to the skin, thus producing sun spots.

What are the causes and prevention methods of sun spots?

1. Ultraviolet rays

The most direct influence in the process of melanin production comes from the ultraviolet rays in the sun. It can activate tyrosinase in melanocytes, produce a series of reactions with tyrosinase in the blood, generate a substance called "DOPA", and then convert it into melanin.

2. Toxin accumulation

Toxins in the skin can activate cell activity and also produce an oxidation reaction with tyrosinase to generate "DOPA" and release melanin. The pollution, radiation, and smoke that we have to face in life will intensify the oxidation process, making the skin tone darker and more uneven.

3. Cells are stimulated

Pollution, sunlight...all kinds of external threats can cause inflammation of skin cells to varying degrees. In order to repair inflammation, skin cells will naturally react and secrete a tetraenoic acid substance, which will activate tyrosinase to a certain extent and promote the production of melanin.

How to prevent sunburn

Most of the sunlight is composed of visible light, and the spectral range is about 390 ~ 770nm. In addition to its ability to stimulate the retina of the eye, it also has some biological activity. Above 770nm is infrared light, which is invisible heat that can make the skin red. Ultraviolet light below 390nm. The disease is caused by medium-wave ultraviolet rays of 290 to 320 nm. The disease is caused by medium-wave ultraviolet rays of 290 to 320 nm. The degree of skin reaction varies depending on exposure time, range, environmental factors and skin color. Heat can increase the body's sensitivity to UV rays. The incidence of this disease is also related to individual susceptibility. It is more common in spring and early summer. The disease is more common among plateau residents, snowfield explorers, or people who do evil on the water.

1. You can choose some whitening products with safer ingredients and apply them to the affected area. Be sure to pay attention to the safety of the ingredients. Don't believe in some advertisements that say there are no products listed, and some products that have very fast and obvious effects. These products generally contain lead and mercury, which can cause harm to the body.

2. In addition to applying some products, patients also need to pay attention to their diet. They can eat more foods rich in vitamin C and vitamin E, such as tomatoes, apples, and lemons. They can also take vitamins directly orally. These foods can help patients whiten their skin and produce antioxidant effects.

Above we talked about the causes of sunburn and how to prevent it. In our lives we must pay attention, protect our skin, and not let sunburn grow. In addition, eating more fruits can also increase the vitamins in the body and prevent the formation of sun spots. In this way, our skin will be better cared for and our beauty will be revealed.