When the water temperature is too cold, that is, when the water temperature is lower than 20℃, it can really make the human skin converge. Washing your face with water at this temperature can exercise your skin and refresh your mental state. However, washing your face with too 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, and lose the elastic mechanism, leading to premature aging of the skin, which is not good for skin nourishment.

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:

Correct washing method:

1, grasp the cleansing water temperature. When the boiling water is naturally cooled to 20℃~25℃, the gas dissolved in it is reduced by about 1/2 compared with that before boiling, and the water quality also changes, the cohesion is increased, the molecules are more compact, and the surface tension is strengthened. This water quality is very close to the moisture in skin cells, so it is easier to penetrate into the skin, thus making the skin more delicate, rosy and shiny.

2. Use a soft cleaning towel. Made of soft non-woven fabric, rich foam can be rubbed out after adding water, and cleansing and light makeup can be completed at one time. The texture of non-woven fabric can also be used to gently exfoliate. Because it is convenient, it is especially suitable for lazy people or business trips, but people with particularly fragile cuticles had better not use it every day.

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