
Why is curly hair curly?
Try 3 issues of BBC Science Focus Magazine for £5!
Forget about eating your crusts, here are the real reasons for those tumbling, curly locks.
Asked by: Rebecca Walker
Advertisement
There are three contributing factors, all governed by your genetics. Firstly, the sac from which the hair grows (the ‘follicle’) is oval in shape, compared to straight hair’s more circular follicle.
Next, curly hair exits the skin’s surface at more of an angle than straight hair, causing it to curve as it grows.
Lastly, the shape of curly hair tends to result in more chemical bonds forming between protein molecules in the hair strand, which adds to the curliness.
Read more:
Advertisement
Subscribe to BBC Science Focus Magazine for fascinating new Q&As every month and follow @sciencefocusQA on Twitter for your daily dose of fun facts.
Authors
Advertisement
Advertisement
Sponsored Deals

January sale subscription offer!
- Try 3 issues of BBC Science Focus Magazine for just £5
- Risk - free offer! Cancel at any time when you subscribe via Direct Debit.
- FREE UK delivery.
SUBSCRIBE NOW
Advertisement