All hair dye articles

Opinion

Letters: July 2023

2023-07-04T08:44:00Z

Readers discuss immortality, wine and hair straightening 

Careers

Developing colour-changing technologies

2019-11-14T10:00:00Z

Lauren Bowker and Louise Anderson of The Unseen explain how they’re fusing materials chemistry and art

Podcast

Ammonia

2012-11-21T00:00:00Z

Brian Clegg sniffs out the chemistry behind this week's famous compound