Hair is like a spring. Just as a spring can be coiled or straight, some people’s hair naturally curls because of the shape of their hair fibers. Imagine your hair is made out of tiny straws, if they’re round on the outside and flat on the inside, they curl up. If they're all round, they stay straight.
Examples
- A curly-haired person’s hair bends like a spring
- Straight hair is like a round straw
- Hair can be shaped by what's inside it
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See also
- Why Do Some People Have Naturally Curly Hair?
- What Makes Hair Curly or Straight? | COLOSSAL QUESTIONS?
- {"response":"{\"What is hair made of?
- What is Body hair, composed of?
- Why Do Some People Have Naturally Curly Hair?