Is it advisable to wash hair with cold water in summer?

In summer, when the weather is relatively hot, many people like to wash their hair with cold water. Generally speaking, this will not have a negative impact on health. However, the key lies in the specific temperature of the cold water. If the water is too cold, it will not be beneficial to health, especially for older people. This can easily cause sudden contraction of blood vessels in the brain, which may lead to serious harm. Even for young people, it is important to control the water temperature when washing their hair. Let's take a look at this aspect.

It is not advisable to wash hair with cold water in summer. During the hot summer, people tend to wash their hair with cold water when they are sweating profusely. However, this practice can easily cause vascular dysfunction. The arterial blood vessels in the head are very sensitive to pain. In high temperatures, the head is prone to sweating, which causes the blood vessels to dilate. If cold water is used to rinse at this time, it may cause abnormal intracranial vascular function, leading to symptoms such as dizziness, blurred vision, and vomiting. In severe cases, it may even cause intracranial hemorrhage. Therefore, it is recommended to avoid using cold water to wash hair in hot summer and instead use warm water.

There are several hazards associated with washing hair with cold water in summer:

Firstly, it may not clean the hair effectively. The sudden coldness of cold water stimulates the capillaries and superficial layers of the skin to contract, which leads to the contraction and closure of sweat pores. This disrupts the normal metabolism of the skin, preventing the removal of dirt and metabolites that should be excreted through the sweat pores. Over time, this can lead to unclean hair and hair loss due to metabolic disorders.

Secondly, it can trigger headaches. Using cold water to wash hair in summer can stimulate the nervous system. The excitement and inhibition of the brain have certain limits. If the areas that should be inhibited are constantly stimulated, it can disrupt the balance of excitement and inhibition, leading to neuropathic headaches. These headaches can be classified into three main types: functional headaches, vascular headaches, and tension headaches.

Thirdly, it can cause other serious symptoms. If cold water is used to wash hair every day in summer for a prolonged period, it can lead to symptoms such as headaches, dizziness, irritability, anxiety, palpitations, shortness of breath, fear, tinnitus, insomnia, backache, neck stiffness, and more. Some patients may experience obvious tenderness on both sides of the neck and pillow area. In severe cases, it may even lead to the development of thrombosis due to violent contraction of blood vessels in the brain.

Therefore, it is important to be aware of the potential hazards of using cold water to wash hair in summer and take appropriate measures to protect your health.