Occupational studies stretching back decades have found an increased risk of bladder cancer among hairdressers.

The dyes are also vegan, containing the likes of ‘Hero Sea Silk’, an extract from red algae that restores hair fibres, and cocamide, a rich emollient that adds iridescent to the colour and deep ...

We tested the best black hair dyes that don't fade and these are the ones to buy, including permanent and semi-permanent ...