Washing your face with cold water for a long time will shrink the blood vessels of the skin, make the skin pale and withered, reduce the secretion of sebaceous glands and sweat glands, lose the elastic mechanism, and make the skin age prematurely, which is also unfavorable for skin nourishment. The venules of human epidermis contract when they are cold, which hinders the transport of nutrients in epidermal cells and makes the skin lack nutrition. When the skin is cold, the collagen under the skin will become thinner and the elastic fibers will be lengthened, which is also very harmful to the skin.

Especially for oily skin, if you wash your face with cold water for a long time, your pores will shrink because of "cold absorption" and you can't clean the dirt accumulated on your face, such as sebum, dust and cosmetic residues in daily life. Not only can it not achieve the cleaning effect, but it is also easy to cause skin diseases such as acne and acne, which affects its own health.

In summer, the face that is often exposed to the outside is more oily, and there are elements such as sweat and life pollution, which will make people's faces secrete more. If you wash your face blindly with cold water, the oil on your face will solidify as soon as it touches cold water. When the face is covered with a mixture of sweat, grease and dust, people wash their faces with cold water, which is actually equivalent to not washing, and may even block pores, prevent oil secretion, and cause bad consequences such as acne.

Extended data

When people wash their faces, it is best to choose the water temperature according to the skin properties. If it is oily and mixed skin, especially in summer, it is recommended to wash your face with warm water first, so that the pollution on your face can be washed off first, and then washed with cold water. Hot water will open pores, which is more conducive to deep cleaning. The biggest advantage of washing your face with cold water is that it suddenly tightens pores, which is good for skin health. The disadvantage is not conducive to cleaning pores.

Washing your face at 34℃ is the best skin care. The water temperature should be around 34℃, slightly higher than the skin temperature, but lower than the body temperature. Try it with your hands, it will feel warm, but it won't feel hot. This warm water can not only clean the skin, but also has a calming effect on the skin, which is conducive to the rest of the skin and relieve fatigue, and does no harm to the skin.

Too high water temperature (above 38℃) can relieve pain and dilate capillaries on the skin, but frequent use will defat the skin, weaken the vitality of blood vessel wall, lead to the expansion of skin pores and make the skin easy to relax and wrinkle.

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