Why is it so dry in winter?

Skin is divided into epidermis, dermis and subcutaneous fat. The outermost layer of epidermis is stratum corneum. Because of the water absorption and barrier function of the stratum corneum itself, and the natural moisturizing factors such as amino acids, lactate and sugar contained in the stratum corneum, the stratum corneum maintains a certain water content and keeps the skin moist. The appearance of skin is related to the moisture content of stratum corneum. Normal stratum corneum usually contains 10%-30% moisture to maintain skin softness and elasticity. However, with the increase of age, the water content of stratum corneum will gradually decrease. When the water content of stratum corneum is lower than 10%, the skin will be dry, tight, rough and desquamated.

So what are the reasons for skin moisture loss, dry skin and loss of luster? Generally speaking, the internal and external conditions that cause the natural moisturizing structure of the skin to lose balance mainly include:

With the growth of age and skin aging, its moisturizing function and barrier function gradually weaken, and the content of natural moisturizing factors decreases;

● Dry and cold climate with low humidity, such as autumn and winter;

● Some skin diseases, such as psoriasis and ichthyosis;

● Environmental and chemical factors, such as detergents such as washing powder, soap and detergent, organic solvents such as alcohol, and long-term air conditioning environment;

● Eating and sleeping habits, such as partial eclipse, drinking less water, insomnia, etc.

● Dry skin.

Because the skin is in direct contact with the external environment all the time, if it is not protected, it will lack water more or less, which will directly affect the appearance of the skin. At this time, in addition to ensuring a normal and healthy diet, protein and vitamin supplements, trying to avoid the influence of external adverse factors and actively treating skin diseases, appropriate moisturizing cosmetics should also be used as needed.

Seven laws of rejecting drying

In winter, although people like to take hot baths. But warm water is good for the skin, because hot water will completely wash off the natural oil on the skin, and this natural oil is much more effective than using skin care products to relieve dryness after bathing.

● Generally, bathing in winter should not exceed 15 minutes.

● If you must take a hot bath, use a bath or mild soap as much as possible. After bathing, emollients should be applied to all parts of the body when the skin is not completely dry. Doing so helps the moisturizing ingredients penetrate into the upper layer of the skin.

● When men shave in winter, it is best not to use shaving cream, but to use shampoo instead.

● For those parts of the body that are prone to chapping, it is best to use strong skin care products, such as vaseline. Different from ordinary skin care products, vaseline can "seal" the skin and reduce the evaporation of water, which is very effective in protecting dry skin.

● Use some hand cream that can keep moisture after washing or washing hands.

● At home, there are more exposed places than outdoors. Using humidifier is a good way to solve dry skin.