I've bought 2 different types of hair mascara, which I don't remember the brand, -one being golden the other blonde- to use when cosplaying as a character with platinum blonde hair, and didn't really work for me. xD
That was probably normal though because I have the blackest of eyebrows.. I ended up bleaching them about 3 tones lighter, then dyeing them back to black after the convention. :3
Although that may have been my bad luck in mascaras. :C So you won't know if you don't try!