Conditioners and masks have an important role to play when it comes to keeping your hair in tip-top condition, says Taylor. But what’s the difference between the two? And why do we need both? “Put simply, a conditioner should be used every time you wash your hair while a hair mask is used just once or twice a week,” explains Taylor. Hair conditioners… Treat the hair surface, smoothing down cuticles that are raised by shampooing to make hair shinier and less tangled. They are