With nicen easy root touch up you can give your roots the boost they need in between your regular colouring it works in just 10 minutes and the best bit is that it has a precision brush for quick and easy application it provides up to 100 long lasting grey coverage matches leading brands and works even with salon colour that means youll be sure to find just the colour youre looking for nice n easy root touch up is a permanent hair dye that blends seamlessly and lasts for up to 3 week