The harm of girls washing their hair with cold water

Girls' bodies are generally more fragile than boys', and since every girl has a menstrual period every month, girls should also pay attention to keeping their bodies warm in daily life and avoid touching cold water frequently. However, a very small number of girls are accustomed to washing their hair with cold water, which can cause great harm to girls' bodies. The following article summarizes for girls the dangers of frequently washing your hair with cold water.

1. The chance of catching a cold will increase significantly

In hot seasons or after exercise or labor, flushing the head with cold water has many adverse consequences. Many people like to wash their hair with cold water when they are sweating profusely on hot days, which can easily cause vascular dysfunction. The arteries inside the human brain are very sensitive to pain. In hot seasons, the head is prone to sweating after exercise and labor. At this time, the blood vessels dilate. If you rinse with cold water, it may cause abnormal function of the intracranial blood vessels, and there will be dizziness, black eyes and vomiting. In severe cases, it may also cause intracranial hemorrhage, so be sure to rinse with warm water after strenuous exercise.

2. Cold water in winter can easily cause colds and frostbite

In the cold winter season, the cold wind penetrates into the bone. Washing your hair with cold water will cause blood vessels to constrict, body temperature to drop, the body to get cold, and lead to a cold. In addition, it is easy to catch cold and develop respiratory diseases, among which typhoid bacillus and tuberculosis bacillus can even take advantage of the opportunity to invade. The water in winter is freezing cold. If you wash your hair with very cold water for a long time, your skin will get frostbite and chilblains.

3. Washing your hair with cold water will not clean it thoroughly

Compared to warm water, washing your hair with cold water is much less effective. Because warm water can dilate the skin capillaries and the superficial blood vessels of the dermis, open the sweat pores, and promote the excretion of metabolic waste. Its cleansing power is stronger than cold water, and dirt attached to the hair shaft is easier to remove. On the contrary, the sudden stimulation of cold water causes the skin capillaries and superficial blood vessels in the dermis to contract, which in turn leads to the contraction of sweat pores, blocking normal skin metabolism. Dirt that could have been removed and some metabolites hidden in the sweat pores that should have been excreted will remain in the body. Over time, you will find that not only will your hair not be washed clean, but using cold water to wash your hair for a long time will also cause hair loss due to metabolic disorders.