Why monsoon humidity causes hair fall

• High humidity and dampness cause hair to swell and break easily
• Fungal growth and pollutants further weaken follicles and scalp
• Use sulphate-free shampoo and avoid tying wet hair to reduce fall

Notice more strands on your comb when the skies open up? You’re not imagining it. The monsoon brings welcome relief from the heat, but it can be tough on our hair. Let's break down why this happens and what you can do about it.

The Humidity Factor

The number one culprit behind monsoon hair woes is humidity. When the air is saturated with moisture, your hair acts like a sponge. The hair shaft absorbs this excess moisture, causing it to swell. This process lifts the cuticles—the protective outer layer of your hair—making the entire strand weak, porous, and prone to breakage. This is why hair often feels frizzy, unmanageable, and fragile during rainy weather. It's not necessarily that more hair is falling from the root (though that can happen too), but that the weakened strands are snapping off more easily during combing, styling, or even just running your fingers through them.

An Unhappy Scalp Environment

A healthy scalp is the foundation of healthy hair, and the monsoon creates the perfect storm for scalp issues. The constant dampness, combined with sweat, can create a warm, moist environment where bacteria and fungi thrive. This can lead to an overgrowth of Malassezia globosa, the fungus associated with dandruff, causing itchiness, flakiness, and inflammation. An inflamed or infected scalp is not a healthy environment for hair follicles. This can disrupt the natural hair growth cycle and lead to an increase in telogen effluvium, a condition where more hairs than usual enter the shedding (telogen) phase, resulting in noticeable hair fall.

The Trouble with Rainwater

Getting caught in a romantic downpour might look good in the movies, but it's not great for your hair. Rainwater isn't pure H2O; it often carries atmospheric pollutants and can be slightly acidic. When this water dries on your hair and scalp, it can leave behind residue that clogs follicles, strips away natural oils, and leaves your hair feeling grimy and limp. This build-up can further irritate the scalp and weaken the hair shaft, contributing to both breakage and fall. If you do get drenched, it's always a good idea to rinse your hair with clean water as soon as you can.

Your Monsoon Hair Care Arsenal

Fighting back against monsoon hair fall is about adjusting your routine. First, keep your scalp clean. Use a gentle, sulphate-free shampoo to wash your hair two to three times a week to prevent build-up without stripping natural oils. Always follow with a good conditioner, focusing on the lengths and ends to seal the cuticle and reduce frizz. Second, never tie up wet hair. This is a golden rule. Tying wet hair creates a breeding ground for fungus and puts immense tension on fragile, swollen hair shafts, leading to breakage. Let it air dry or use a blow dryer on a low heat setting. Finally, detangle with care. Use a wide-tooth comb, starting from the ends and working your way up to the roots to gently remove knots without pulling.

Nourish From the Inside Out

While topical care is crucial, don't forget that hair health is an inside job. The monsoon season can sometimes bring changes to our diet and an increase in water-borne illnesses that affect nutrient absorption. Ensure your diet is rich in proteins (the building blocks of hair), iron (to prevent anaemia-related hair loss), and biotin. Include plenty of eggs, nuts, seeds, leafy greens, and seasonal fruits in your meals. Staying hydrated with clean, filtered water is also essential for overall health, which reflects in the strength and lustre of your hair. A balanced diet provides your hair follicles with the fuel they need to stay strong and resilient, whatever the weather.