What Makes Hair Curly | CURLY HAIR SCIENCE SERIES Pt.2?

Hair becomes curly because of how it grows and what happens inside each strand.

Imagine your hair is like a rope made up of tiny threads. If those threads are all twisted together when they grow, the rope, or your hair, will be curly. That’s what makes some people's hair curly instead of straight.

Your hair starts as a little thread deep inside your head. It grows out through a hole in your skin called a hair follicle. If the threads are twisted when they grow, the hair will be curly. If they’re straight, it’ll be straight, just like how a rope is shaped by how its threads twist.

Some people have hair that’s more likely to curl because of what's inside their strands. It's like having different kinds of ropes: some are made of really twisty threads, others are smoother. That's why your friend might have curly hair and you have straight, it all depends on the structure of each strand.