From Chanel's luxury version of the Nineties straightening trend, to TikTok's obsession with 'liquid hair' and 'glass hair', ...

Choose from easy-to-apply glosses that give the much admired “glass hair” effect, micro-extensions that will perfect the shape of a cut, or curl aids that will promote your natural waves.

crushed spearmint leaves and white wood — so your strands will smell as good as they look. Don't love the idea of those products? Here are a few more that'll get you that glass hair look.