Root Touch Up by Nice 'n Easy No.4 Dark Brown Root Touch Up by Nice 'n Easy covers pesky roots & greys between colourings in just 10 minutes to extend the life of your hair colour. The permanent colour blends seamlessly for up to 100% grey coverage that lasts up to 3 weeks. Root Touch Up by Nice 'n Easy is a non-drip formula & is supplied with an angled precision brush for total control over where you apply the colour. Root Touch Up by Nice 'n Easy No.4 Dark Brown matches other permanent dark brown shades, even those from other leading brands.