mascara that dyes your eyelashes

i saw an ad for the new rimmel mascara a little while ago and, since my eyelashes are getting a bit sparse and are more of a dusty brown colour anyway, thought i'd give it a go. i think it's called colour master, or colourist

the packet said i would see a difference in 2 weeks - well i've seen one in 1! It really has made a difference to my tired old eyes, which i'm quite happy about as i can't dye my eyelashes at home. Now to sort out my eyebrows...anyone have any ideas???