The harm of cold water washing hair for girls

For girls, you must use warm water to wash your hair. Even in summer, you cannot use too cold water to wash your hair. Washing your hair with cold water is quite harmful. It will increase the chance of catching a cold. For women, if you wash your hair with cold water during menstruation, it is likely to cause irregular menstruation and decreased immunity. Let's take a look at the dangers of washing your hair with cold water for girls.

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.

4. It destroys your nerves

Our scalp is one of the areas with the richest nerves. It is closest to the human nerve center, the brain, and is closely connected to it. Our nerves will react when they are stimulated, and the brain's excitation and inhibition have certain limits. If we continue to stimulate the parts that should be inhibited, the rules of excitation and inhibition will be disrupted, causing disease. This neurological disease is medically known as neuralgic headache. Neurological headaches are divided into three categories: functional headaches, vascular headaches and tension headaches.