Is it good to wash your hair with cold water

Summer is here, and many people come back from outside and take a cold shower or wash their hair when they are sweating profusely. Although cold water can instantly lower the body temperature, washing your hair with cold water is very bad for your health. It can induce a cold, and washing your hair with cold water can damage the hair and cannot thoroughly clean it. So is it good to wash your hair with cold water? The following is a relevant introduction.

Cold water contains a lot of bacteria. If you wash your hair with cold water, it will cause bacteria to grow on the scalp, which is very bad for health, and some will damage the hair. So what is the best water temperature for washing your hair? How can you wash your hair without damaging it?

The water temperature for shampooing should be 38℃. The water temperature for washing oily hair can be slightly higher, while that for dry hair can be lower. Use soft water for shampooing, or boil the water and let it cool before use. Use enough water to rinse thoroughly. Many people like to wash their hair with cold water when they are sweating profusely on hot days, which can easily cause headaches. Because the arteries inside the human brain are very sensitive to pain, in hot seasons, the head is prone to sweating after exercise and labor, and the blood vessels dilate. If you rinse with cold water, it may cause abnormal function of the intracranial blood vessels. During an attack, there will be dizziness, black eyes and vomiting. In severe cases, it may also cause intracranial hemorrhage. Therefore, you must rinse with warm water after a lot of exercise. The elderly with cardiovascular and cerebrovascular diseases should pay special attention to this.

Is it good to wash your hair with cold water? The temperature of shampooing water should be between 31 and 38 degrees Celsius. Water that is too hot can easily damage your hair, making it brittle and easy to break; water that is too cold (cool) will have a poor effect in removing oil stains and will not be able to wash it clean. When changing the water used, the water mixture of the water used first and then the water used second should be roughly the same. It is not advisable to use cold water first and then hot water, or hot water first and then cold water. The best water is warm water because warm water can expand the skin capillaries and superficial dermis blood vessels, open the sweat pores, and promote the excretion of metabolic waste. Therefore, it has stronger detergency than cold water, especially the dirt attached to the hair shaft is easier to remove. If you wash your hair with cold water in the cold winter, it will cause a cold. Even in the hot summer, it will cause diseases such as heat colds due to the difference in head temperature.

Is it good to wash your hair with cold water? It can be seen that washing your hair with cold water is not good. It not only damages the hair, but also may cause cold infection. So when you wash your hair, no matter how hot the weather is, don't use cold water. Generally, warm water over 30 degrees is the best. Also, in the hot summer, you must not blow the air conditioner immediately after sweating profusely, as this will easily catch a cold.