Review (5/5): Glad I Tried this First!
Love it. I have black hair with a few silver hairs at the temples, so I bought this to accentuate it. I'd planned to put s few more permanent silver streaks in my hair, but I'm happy that I bought this instead: it washes out easily if I don't quite get the effect I want. I was able to put in very natural silver streaks. The effect is subtle on darker hair, but it beautifully enhanced my gray temples.
The product arrived well ahead of time & was well packaged. It smells nice, and it easily washes out.
One caveat: it is water soluble. If you live in a hot or humid place, or you perspire easily, it could run a bit if your hair gets wet.
I'd definitely buy it again. I'm curious about the other colors.