What Are the Hazards of Washing Your Hair with Cold Water?
Mar 04, 2022
Source: Cainiu Health
Dr. Chen Bin
Introduction
Washing your hair with cold water poses several health risks, commonly leading to headaches and colds. Specifically:
1. **Headache**: Cold water stimulates the scalp and cerebral cortex, which is highly sensitive to such low-temperature stimuli.
2. **Cold/flu**: Individuals with weakened constitutions are particularly susceptible to cold pathogens entering the body after washing hair with cold water, potentially causing a drop in body temperature.
Hair washing is an indispensable part of our daily routine—typically involving gentle scalp massage with the fingertips to promote blood circulation. But what are the potential health hazards of washing hair with cold water? Below, we address this question.
What Are the Hazards of Washing Hair with Cold Water?
Washing hair with cold water poses several health risks, commonly leading to headaches, colds, and other issues. Specific concerns include:
1. Headache: Cold water induces rapid vasoconstriction in the scalp due to its low temperature. The cerebral cortex is highly sensitive to such thermal stimulation, and the resulting reduction in scalp blood flow may cause numbness or tingling sensations and headaches. Prolonged exposure can disrupt intracranial vascular function, potentially leading to dizziness, nausea, and vomiting—posing serious health risks.
2. Cold or Flu: Individuals with compromised immunity or weaker constitutions are especially vulnerable when washing hair with cold water. The sudden cold exposure may allow pathogenic cold qi to invade the body, lowering core body temperature and triggering systemic chills. This increases susceptibility to upper respiratory infections—including common colds, influenza, and fever. Therefore, regardless of ambient temperature, it is advisable to use lukewarm water for hair washing rather than sacrificing long-term health for momentary coolness—particularly for women, who should avoid this practice altogether.
After washing hair with warm water, it is recommended to minimize exposure to cold drafts. Use an absorbent dry towel to thoroughly pat hair dry as soon as possible, preventing prolonged moisture retention on the scalp—thus helping prevent the aforementioned conditions.
