Wella's Koleston Root Touch Up 3, is your secret to flawless roots in just 3 seconds, anytime, anywhere. The best part? Root Touch Up 3 is water and humidity-resistant, so that you can go about your day without worrying about touching up your roots. Our formula is ammonia and peroxide-free and dermatologically tested, for root coverage that is gentle to your hair and scalp.Lasts until your next shampoo.Purse portable.