I would give it a go but you literally need to put it on and straight off if you leave it like hair dye it gets darker the longer its on so dont go by the colour it says. I used to do a lot of tinting myself and eyebrows can be tricky to gert right so it might be worth the �5-10 first time around and use a mirror to watch what they do. I used to put it on then straight off and keep builiding on the colour doing the same thing till my client was happy. Dont paint it straight on, lift the hairs and dab it on with a cotton bud, lift the hairs with an orange wood stick or another cotton bud stem, something thin anyway, as soon as you have done one eyebrow take it straight off with damp cotton wool, try not to spend to lon doing oine brwo or it will be too dark for you if you have light hairs. Good luck....