Winter is dry, the human body is particularly prone to moisture loss, hair is also prone to dry and frizzy. But winter hair washing, the most trouble is that the hair is not easy to dry, and cold and wet so that people are particularly uncomfortable, so many people will choose to use the hair dryer after washing their hair, but the improper use of the way will make the hair quality becomes more fragile, but aggravate the problem of dry, rough hair. As the temperature drops, many people will rush to use the hair dryer after washing their hair to prevent getting cold. The Third Affiliated Hospital of Southern Medical University, Director of the Department of Dermatology and Venereology Zhou Xian Coix said that the high temperature of the hair dryer is easy to cause moisture loss, especially the use of the largest wind, the largest number of heat gear, if the hair dryer continues to dry hair at a high temperature of 80 degrees Celsius, will subtract 2%-3% of the natural moisture of the hair. This is enough to make the hair fragile, and will destroy the hair keratin, making the hair dry, rough, so that the hair loses vitality and luster, difficult to post, thus causing damage to the hair. Improper use of hairdryer blowing hair, but also harm the scalp. In fact, in the winter under the influence of dry and cold, the epithelial cells of the scalp keratinization faster, so the scalp is more likely to appear dry, flaky and hair loss. If you can pay attention to the following points when using a hair dryer, you can greatly reduce the damage: 1, the hair should be zoned blowing, as the hairdresser in the hairdresser to do the same, first the upper layer of the hair bundle to the top of the head, the lower layer of the hair blow dry and then the top of the wet hair down, and then blow dry in turn, so do in addition to the hair is more likely to dry, but also to some extent reduce the impact of hot air on the hair. 2, pay attention to the root of the hair, blow dry and then blow the tips, or let the tips of the natural air dry, so that you can minimize the damage of the hair dryer; there is to let the hair dryer and hair to maintain a distance of about 15 cm, try to avoid letting it touch the hair, because too close will lead to thermal damage to the hair. 3, the hair dryer is best to keep moving, because when blowing an area, if the hair dryer is stationary easy to let the hair damage. Therefore, it is recommended to use both hands when blowing the hair, one hand to poke the hair away, one hand to move the hair dryer. 4, it is best not to blow backwards wet, because the hair scales are open, blowing in the direction of hair growth will allow the scales to close, if blowing backwards will allow the scales to open, the more frizzy blowing. Warm tips: 1, combing hair without nylon comb. Nylon combs are prone to static electricity, will bring bad stimulation to the scalp, but also easy to make the hair lead to dryness and dehydration, the use of horn comb, massage the scalp to increase hair nutrition, but also to enhance the vitality of the scalp cells. To have a beautiful hair, in addition to the scientific use of hair dryer to reduce damage, but also must do a good job of hair care. 2, to prevent sun damage to the hair. If you have been exposed to the sun or seawater, you should thoroughly moisturize your damaged hair. 3, as little as possible perm and dye hair. The alkaline ingredients and oxidation in the perm and dye solution can cause damage to the scales of the hair surface and loss of moisture and nutrients, which is harmful to the hair, scalp and hair follicles, and denatures the keratin of the hair, making the hair yellow and brittle, without luster and elasticity.