The weather is dry and windy, how to maintain the skin?

Generally speaking, skin is easy to dry in autumn and winter. After the age of 25, sebum secretion disorder and the reduction of natural moisturizing factors will cause dryness. There are two kinds of sebum secretion disorders, one is excessive secretion, forming oily skin; One is to reduce secretion and form dry skin; The two kinds of drying are different. Note that there are two reasons for dry skin: lack of water and anemia. Therefore, it is very necessary to replenish enough water in the body: this is the reason for drinking at least 6 ~ 8 glasses of water every day; In addition, blood must be supplemented: because anemia first makes the skin blood vessels contract and become pale and dry.

Of course, besides its own physiological factors, dry skin is also greatly influenced by external factors, including cold wind, hot sun and central air conditioning, which all take away moisture from the skin.

Therefore, to sum up, the causes of skin dryness are as follows:

1. With the increase of age, the skin's ability to retain moisture will decrease, and sebum secretion will also decrease, which will make the skin's moisture

2. Sebum secretion is insufficient-the skin's surface is formed by sebum membrane, which can help the skin maintain proper moisture. Once the secretion of sebum is reduced, it cannot meet the needs of making sebum film, and the skin will become dry.

3. The temperature drops-in the cold winter, the secretion of sebum and sweat will decrease rapidly, but because the air is too dry, the moisture of the skin will gradually evaporate, the surface of the skin will become rougher and the resistance will be weakened.

4, lack of sleep, fatigue-lack of sleep and fatigue, will make the body suffer considerable damage, blood circulation will become worse. When health is out of balance, the skin will have no vitality, and it is easy to produce dryness and roughness.

5, weight loss and partial eclipse-extreme weight loss and partial eclipse will also make the skin dry. When the skin can't get enough nutrients, it will lose elasticity and moisture, making the skin dry and fragile. Xeroderma is also called xeroderma.

6. Other reasons-too high indoor heating temperature, taking a bath with overheated water, using irritating soap or detergent, and endocrine changes, such as decreased estrogen secretion in women after menopause.

In the cold, windy and dry season, it is not enough to rely on the oil secreted by the skin itself, but also need external moisturizer. No matter which season is the most important season for conditioning skin, there are several ways to moisturize skin:

1. Grease moisturizing method to prevent skin moisture evaporation, that is, the skin is coated with petrolatum, which can seal the skin so that the water in the skin will not evaporate. This is the reason why the commercially available Ponzi Vaseline skin cream uses this principle. Its disadvantage is that it is too greasy, easy to absorb soil, and dirty paste on the face.

2. Moisture absorption and moisture retention method for absorbing external moisture They use glycerol, sorbitol, propylene glycol, polyethylene glycol and so on. They are water-absorbent and suck water from the atmosphere into the skin. For example, glycerin is water-absorbent and has moisturizing function, but it can't be pure. On the contrary, pure glycerin absorbs the water in the skin, and the ratio should be 1: 3. Generally, 1%~15% glycerin is added to the prescription, which is oily and absorbent.

3. Hydration and moisturizing combined with hydration are hydrophilic and water-soluble substances. It will form a network structure, turning free water into bound water in the network. Such substances include collagen, elasticity at least, hyaluronic acid, etc.

4. Repairing and moisturizing keratinocytes can improve the protective function of skin to achieve the purpose of moisturizing. Such as vitamins A, C, E, B5, fruit acid, etc., all of which can improve the function and metabolism of keratinocytes, thus improving the moisturizing function of the skin.

The simplest and most effective way is to drink more water, wash your face and sprinkle some water on your face frequently. However, after hydrating your face, you must lock the water on your face with hydrophilic things, otherwise it will be drier after the water evaporates, just like your lips are getting drier.