The product itself comes in a mascara style tube and blends into your hair with an applicator similar to a mascara wand but more like a little comb. It blends in easily and covers grey which is exactly what I'm after. It's marvellous for quick touch ups.
BUT it doesn't last like it says it does, definitely not until the next wash and I found myself constantly touching up.
So, would I buy it again? Probably not unless it was on special.
In summary, probably a great thing to have on hand for grey emergencies but be prepared to touch it up.
Handy for grey touchups . I like this. But I'm not sure about full regrowth application. The brush is little so that could be tricky.