A famous hair colourist once told me that hair colour was like dry cleaning. "You spend a lot of money on cashmere and send it to the dry cleaners to wash it; why would you spend a lot of money on your hair colour only to throw it in the washing machine?" Thing is, I get it, it's hard to dish out loads of money on shampoo and conditioner when there are so many non-spenny options out there. Nexxus is a great compromise. The brand's formulas are always incredibly high quality and leave your hair soft and your hair colour looking vibrant, but without breaking the bank. Case in point: the brand's new Nexxus Blonde Assure Purple Shampoo (£10) costs less than £15 and ensures your golden highlights will continue to look golden and bright weeks after your salon appointment.