This is a continuation of the discussion on grey hair. I have found a product that works just fine for eyebrows. It is put out by gloMinerals and is called gloBrow gel. I found it at a place called Beauty First. The saleslady says it is a consistently good seller.
It goes on with what looks like a mascara brush, but the liquid inside is not so clumpy, if you know what I mean, but is thinner. I like it fine. It looks natural. There were 3 colors, black, brown and taupe or something.
Also, in the back of my makeup drawer I found an old Revlon eyebrow colorant that is similar, only it has an eyebrow pencil at the other end of the wand which I did not like. Whether Revlon still makes that or not I don't know. The results are the same as with the gloMineral product.
Hope that helps!
Oh, for grey or white in eyelashes, I would think - don't know - that mascara would get rid of those on top and the other products might help on the bottom. But even just batting the eyelashes right after application can darken the lower lashes.