CROWDSCIENCE
Every week on BBC World Service, CrowdScience answers listeners’ questions on life, Earth and the Universe. Tune in every Friday evening on BBC World Service, or catch up online at bbcworldservice.com/crowdscience
HOW DO YOU GET HEALTHY HAIR?
“Get hair that’s glossy, vibrant and full of life!”. We’ve all seen the shampoo ads. ‘Healthy’ hair is surprisingly important to our personal identities – just ask balding men or people who embrace the kinky or coily texture of natural Afro hair. But isn’t hair mostly just dead protein? And how can something that isn’t alive be considered healthy? It all comes down to the integrity of the cuticle.