Clairol Root Touch-Up, 4 Dark Brown, Permanent Hair Color, 1 Kit The #1 permanent root solution for long-lasting, natural-looking roots. Touch-Up takes only 10 minutes and lasts up to 3 weeks. Seamlessly blends with leading shades, even salon color* * Among leading retail permanent shades and pre-formulated salon color. Gives you permanent, touch-proof, sweat-proof roots.