What would tinting my eyelashes do if they are already black

Question

I'm considering to get them professionally done, since I have this free voucher, but anyway, will tinting them black make any difference if they already are black?

Answer 1

Well the only thing I noticed is you look better when you don't wear mascara but i always wear mascara so it doesn't matter.  

Answer 2

The ends of them will be faded slightly from the sun so tinting will put the colour dark on the tips again and they look longer. I have black eyelashes but get them tinted for this reason