The hot summer is here, and many people like to wash their hair with cold water.But do you know the harm of washing your hair with cold water? 1. The chance of getting a cold will greatly increase the high temperature season and cold water after exercise ...
Harm of cold water shampoo
The hot summer is here, and many people like to wash their hair with cold water.But do you know the harm of washing your hair with cold water?
1. The chance of getting a cold will increase greatly
The high temperature seasons and the cold water after exercise are many.Many people like to wash their hair with cold water when they are sweating. This can easily cause vascular dysfunction.Periodic arterial blood vessels are very sensitive to pain.In the high temperature season, the head is easy to sweat after exercise. At this time, the vascular expansion. If it is washed with cold water, it may cause abnormal intracranial vascular function.Intracranial hemorrhage, so it must be rinsed with warm water after a large amount of exercise.
Second, cold water is easy to catch cold, frostbite
In the winter seasons, cold wind and bone, washing your hair with cold water will shrink the blood vessels, decreased body temperature, and the body is cold, causing a cold.In addition, respiratory diseases are vulnerable to cold cold, and even Typhoid and tuberculosis are even invisible.The water in winter is cold and pierced, and washed with cold water. After a long time, the skin will frostbite and have frostbite.
Third, cold water is not cleaned
Compared with warm water, the effect of cold water washing is poor.Because warm water can expand the skins capillaries and shallow blood vessels, the sweat holes are opened, and the excretion of metabolic waste is promoted. The decontamination power is stronger than cold water.On the contrary, the sudden cold stimulation of cold water, the skins capillaries and leather shallow blood vessels contracted, which led to the shrinkage of the sweat holes. The normal skin metabolism was blocked.The metabolites will stay in the body.Over time, you will find that not only the hair cannot be washed clean, but after using cold water for a long time, you will also cause hair loss due to metabolism disorders.
4. Destroy your nerve line
Our scalp is one of the most abundant areas of nerves. It is closest to the neurological center of human beings, the neurotransmid distance, and the pulse is inherited.Our nerves are stimulated to react, and the brains excitement and suppression have a certain limit. If the part that is constantly stimulated should be suppressed, it will cause the excitement and inhibitory law to be disordered and cause disease.This neurological disease is called neurological headache.Neurological headaches are divided into three categories, which are functional headache, vascular headache and tension headache.
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