Millions of Britons battling hair loss might be inadvertently worsening their condition due to a common daily habit: washing their hair with excessively hot water. Emerging insights suggest that the temperature of your shower could be a critical factor in hair and scalp health.
Hot water, while comforting, acts as a potent degreaser, stripping away the natural oils that protect and nourish the scalp. This can leave hair brittle, fragile, and more susceptible to breakage and fallout. Furthermore, the intense heat can shock the hair follicles, potentially disrupting their normal growth cycle.
The Science Behind the Scalp Stripping
The natural oils produced by your scalp, known as sebum, are not the enemy. They form a protective barrier that moisturises the scalp and keeps hair strands lubricated and strong. Excessively hot water washes this vital layer away, leading to a dry, irritated, and flaky scalp. An unhealthy scalp environment is a poor foundation for healthy hair growth.
What is the Ideal Washing Temperature?
So, what is the golden rule for hair washing? Dermatologists and trichologists recommend using lukewarm water. It is sufficiently warm to effectively cleanse the hair and scalp of dirt and product buildup without being so aggressive that it causes damage. For a final rinse, a quick blast of cool water can help to seal the hair cuticles, adding shine and improving strength.
Other Common Hair Washing Mistakes to Avoid
- Over-washing: Shampooing too frequently can perpetuate the cycle of stripping natural oils.
- Aggressive towel-drying: Vigorously rubbing wet hair causes friction and breakage.
- Applying conditioner incorrectly: Focus conditioner on the mid-lengths and ends, not the scalp.
- Using harsh products: Sulfates and strong chemicals can further irritate a sensitive scalp.
If you are concerned about hair loss, reviewing your hair washing routine is a simple first step. While hot water is unlikely to be the sole cause of hair loss, it can be a significant contributing factor that exacerbates the problem. For persistent issues, always consult a GP or a trichologist for personalised advice.
