Brush away roots and greys in just 10 minutes Seamlessly cover roots Permanent root touch-up hair colorant Helps to extend the life of your colour in just 10 minutes Lasts up to 3 weeks With this hair dye, you can give your roots the boost they need in between your regular colouring. It works in just 10 minutes and it has a precision brush for quick and easy application. It provides up to 100 per cent long-lasting grey coverage and works even with salon hair colorant. It is a permanent hair dye that blends seamlessly and lasts for up to 3 weeks.