India, April 22 -- Most people think hair loss is just about the hair they can see. But what's actually happening is much deeper - literally. Understanding how hair is built, where it grows from, and why it sometimes stops can change the way you think about every strand on your head.

The Anatomy of a Hair Strand

Hair looks simple from the outside - a thin strand that grows from your scalp. But it's made up of distinct layers, each with a specific job.

The outermost layer is called the cuticle. It's made of overlapping, scale-like cells that protect the inner layers. When the cuticle is healthy, it lies flat, and hair looks smooth and shiny. When it's damaged - from heat, chemicals, or rough handling - those scales lift, and hair become...