Need a quick fix pre-holiday but only in my parting - I've seen cover up root spray, but which washes out each time, and presumably which runs off when it rains etc.... I'm looking for something I can maybe just use once or twice, which will see me through a few weeks (during which time, my hair will bleach a bit in the sun anyway).
I'm a home-dye novice - is there something like this on the market, which doesn't require much faff ...