i tried the blue and purple ones on the back of my hand, i was looking for a felt tip waterproof liner to go in the waterline and for something that wouldnt smoog in the top crease ( asian eye). the coloured ones stayed great on the back of my hand, the black one i thought was dried out and not working but if the colored ones were that good the black would be fine too. I WAS WRONG! the black was grey, i thought it wasnt shaken or mixed, i thought more product needed to come out, nope! its just that way, it barely shows up, if you go over it a few time to try and make it darker it just comes off. not impressed