It is possible to wash your hair during a cold. Washing your hair can promote blood circulation in your head and relieve the symptoms of headache and dizziness caused by a cold. But when washing your hair, you must not use cool water to wash your hair. If you use cool water to wash your hair, it may lead to the aggravation of the cold because it is easy to get cold when washing your hair with cool water. When you wash your hair, you must adjust the water temperature appropriately, generally 2-3 degrees higher than your body temperature is more appropriate, you need to dry your hair immediately after washing and use a hair dryer to dry your hair to avoid the phenomenon of cold, which will also aggravate the symptoms of the cold, so you can wash your hair during the cold. If the surrounding environment is too cold, it is also not recommended to wash your hair, which can easily lead to the symptoms of cold. When a cold occurs, you should quickly use cold medicine for treatment, such as cold and fever granules or aminophenol pseudo-lax dispersible tablets.