It’s arguably blonde hair’s biggest nemesis: brassiness. We know it’s not that easy to step into a salon for a tone every few weeks, because who has the time? Your next best option when it comes to refreshing all shades of blonde is your humble purple shampoo or conditioner.

Whether you’re a natural blonde, a balayage trendsetter, a highlighted hottie or a silver fox, purple shampoo should be a staple in your beauty cupboard. I mean, it would be sacrilegious if it wasn’t.

If you haven’t done so already, here are 6 products you need to add to cart immediately.