Hi, I've got a few grey strands on the side of my head that I'd like to cover up for a single occasion this week end. I'm looking for something very quick (shouldn't take longer than 10min) and very simple (should be so fool proof that even a fool like me can't mess up). And something that won't inadvertently suddenly start leaking or leaving stains on my face during the event. It doesn't have to last for longer than a wash. Colour matching is not an issue as my hair is just black.
I bought one of those l'oreal hair mascara thingies a while ago but when I tried it (about 9 months after buying) it was all dry and clumpy. I'm not sure if that's how it is meant to be or if it has just dried out because I didn't use it for so long but I'm reluctant to buy it again in case that is just how it always is. But I'm looking for something similar that requires no more effort than eg pulling a mascara like wand through those few strands of my hair.
Thank you!!