Why is the skin itchy when the weather is cold?

Skin itching is caused by dry skin. The common causes of dry skin in winter are dry weather, overheated bath water and less skin oil secretion. In addition, the use of alkaline detergent or alkaline soap (such as sulfur soap and Shufujia) and too little vitamin supplement may cause dry skin.

1, increase the intake of various vitamins. Vitamins play an important role in preventing skin aging and protecting skin tender and moist. For example, vitamin A deficiency can cause skin elasticity to decrease and become rough; Without vitamin B2, the skin of the mouth and lips will dry and crack. Foods rich in vitamin A, such as animal liver, cod liver oil, lean meat, eggs and orange-red fruits and vegetables. Foods rich in vitamin B2, such as yeast, fish, eggs, beans, Monopterus albus, river crabs, etc. In addition, vitamin E has anti-cell membrane oxidation effect, so it has anti-aging effect on skin. Foods containing more vitamin E, such as sesame oil, peanut oil, soybean oil, Chinese cabbage, etc.

2, often eat foods containing collagen and elastin. Collagen can enrich cells, enrich skin and reduce wrinkles. So you can usually eat some food such as tendon, pigskin and chicken skin.

3. Increase the intake of trace elements. If you want delicate skin and rosy skin, you need adequate blood supply. Iron is one of the main components of heme in blood, so eat foods rich in iron, such as animal blood, egg yolk, meat and so on. The natural iron in food is a kind of high-priced iron, which has little solubility and cannot be directly absorbed. It can only be absorbed by gastrointestinal tract in acidic environment. Therefore, while supplementing iron, it is necessary to increase foods containing more vitamin C, such as tomatoes, green peppers and hawthorn. Zinc deficiency can make the skin dry and rough, easy to grow acne, and foods with more zinc such as oysters, malt, walnuts and melon seeds. In addition, pearls contain a variety of trace elements, amino acids and protein, which can improve the nutritional status of skin, increase the vitality of epidermal cells, make skin soft and clear, and slow down skin aging and wrinkling.