The temperature difference between autumn and winter is big, what should I do if my skin is dry and itchy?

Recently, cold and hot, the temperature difference is large, which leads to some people with unstable skin condition with symptoms such as dryness, itching and desquamation. Not only is the body scratched, but it is even more terrible without makeup, and it is impossible to float evenly on the face. Huang Yong, a dermatologist, said that the temperature difference between autumn and winter is large because the moisture content in the air is reduced, which makes the skin's moisture evaporate. Replenishing water is very important, but the key point is to lock water, otherwise the speed of hydrating can't keep up with the speed of water shortage, and the skin will still be sensitive and dry.

Cold and heat accelerate water loss and stimulate skin inflammation, dryness and itching.

The causes of dry skin can be divided into internal and external causes. The internal cause is the disappearance of water through the skin, which stimulates the immune system to cause inflammatory reaction and produces histamine, while the external cause of hot and cold dryness will accelerate this cycle, resulting in dry and itchy skin in autumn and winter. Nutritionists say that skin has a layered structure and has the greatest relationship with water. From inside to outside are sebaceous glands, dermis and stratum corneum. Sebaceous glands secrete sebum, protect and moisturize the skin and prevent water evaporation. Dermal contains the most water, of which hyaluronic acid and collagen are responsible for storing water; The stratum corneum is the outermost layer, and the water content is related to the dryness of the skin.

Replenishing water and moisturizing the skin also need to lock the water from losing.

The general public knows to moisturize, rebuild the skin barrier, or maintain it through diet and daily adjustment. Nutritionists emphasize that in addition to moisturizing, the most important thing is to lock in water. If water is not locked in the skin, it will evaporate only if it is replenished, and the skin will still be dry and rough. It is suggested that natural oils such as sheep oil and horse oil should be selected for maintenance, or emulsion containing ceramide should be used to fill the gaps in the stratum corneum and establish a water barrier.

Rub lotion immediately after bathing to keep moisture.

Sheep oil and horse oil emulsion can be sprayed on the skin before use to increase the extensibility of oil, or after taking a shower, don't dry it first, apply oil emulsion directly and then dry it. Huang Yong, MD, said, don't worry about being too greasy and polluting clothes; You can also take a bath with bath oil, which also has a moisturizing effect. Patients with atopic dermatitis, psoriasis, diabetes and renal dialysis should pay special attention. In autumn and winter, the skin is easy to dry and itch, so you must choose the appropriate emulsion maintenance.

In addition to emulsion maintenance, seafood and spicy food containing histamine should be avoided in the diet, and the bath water temperature should not be too high. People who are afraid of the cold can turn on the heating in the bathroom, the doctor of Huang Yong University warned, otherwise the high water temperature will cause the loss of cuticle. If a cold current strikes, people who need to turn on the heating should properly replenish water or use a humidifier to avoid indoor dryness and evaporation of skin moisture.