Once winter comes, many people encounter the trouble of dry skin: skin tightness, dry peeling, and even itching, as if no matter what skin care products are used, it does not help. So why is the skin more dry in autumn and winter? Why is the skin dry in winter 1, low air humidity The low temperature in winter leads to less moisture in the air due to evaporation, and less humidity. 2.Less sweating In addition, the low temperature in winter causes human pores to be less open than in summer, so they cannot discharge a large amount of body fluids and lipids to lower body temperature and moisten the skin at the same time. 3, heating open indoor heating and hot air conditioning open will also accelerate the evaporation of skin moisture. 4.High hot water temperature Frequent bathing with hot water of high temperature in winter will also accelerate the evaporation of moisture and lead to dry skin. So, how to save the dry skin? Make it keep moist in winter? Choose a product with hydrating and moisturizing function for skin cleansing, which can make the follow-up work twice as effective. For example, a facial cleanser containing collagen can promote skin metabolism while adding a protective barrier to the skin, preventing loss of epidermal moisture and massive infiltration of external pollutants, thus protecting the delicate skin from harmful factors. Hydration can not only rely on external application of water outside the skin in the evaporation of water at the same time, will also take away the moisture inside the skin, resulting in more dry skin. Therefore, after using water or spray, don’t forget to rub lotion and cream to preserve the moisture inside the skin. It can build a hydrating sebum film for the skin to prevent moisture loss and achieve a moisturizing effect. It is especially suitable for use in the dry season of autumn and winter. You need to apply day and night creams before the skin dries out. Rubbing day and night creams while the skin is moisturized before it dries out will keep the skin moisturized, even in autumn and winter. However, in autumn and winter, you should use moisturizers with high oil content, especially for dry skin. As for oily skin, you should use oil-controlling and moisturizing creams. Reduce the number of skin cleansing appropriately The torso and limb skin bathing should not be too diligent, especially for people over 40~50 years old, and in general, 2~3 days once. If the skin is particularly dry, then once every 5~7 days. The bath water temperature should not be too high, and it is not necessary to use body wash every time. After bathing, the skin should be dried immediately, and a soft moisturizing cream should be rubbed on within 3 minutes. For facial skin, it is recommended to use less or no facial cleanser. Common effective moisturizing ingredients 1, glycerin Glycerin is an inexpensive and high quality moisturizer, in most skin care products, there are added glycerin. In addition, glycerin can be used with other polymeric moisturizers to make the moisturizing effect even better. The current slightly high-grade moisturizing products will be used in line with the moisturizer formula. 2, collagen Collagen is a biological polymer, but also the most abundant and widely distributed functional protein in the mammalian body, accounting for 25% to 30% of the total protein. It is significant for the skin care role, can help repair the broken, aging fiber elastic network, solid its structural shape, effective locking moisture. 3, hydrolyzed collagen Hydrolyzed collagen is the large molecule of collagen to hydrolyze into a small molecular weight of protein. Although it is not as effective as other moisturizers in terms of pure hydration, it is more easily absorbed by the skin. 4, vitamin pro B5 vitamin pro B5 is a penetrating moisturizer, that is, it can penetrate the skin and keep the moisture in the hair and skin. It can also nourish the hair and skin, so that the skin lubrication, anti-drying, cracking. 5, amino acids Vitamin B5 is a penetrating moisturizer, that is, it can penetrate the skin and keep the moisture in the hair and skin. It can also nourish the hair and skin, making the skin lubricated, anti-drying and cracking. 6, hyaluronic acid hyaluronic acid has a powerful moisturizing effect, applied to the surface of the skin, the water absorption effect can gradually exceed the hydration of the stratum corneum, in a short period of time so that the corneal moisture filling. Therefore, while moisturizing, it is also a good transdermal absorption promoter. 7.Natural Moisturizing Factor (NMF) It is the same as the skin’s own moisturizing ingredients, which can regulate the pH value of the skin and maintain the normal metabolism of glial cells. The main ingredients are amino acids, pyrrolidone carboxylic acid, sodium lactate, uric acid, etc. These raw materials are not expensive and have excellent skin-friendliness and low risk of irritation reactions, and are mostly used in various skin care products.