I'm not quite sure TBH! I usually have my eyes closed! Basically they get a little tub of dye and paste it on with a little brush i think? And you lie there with your eyes closed while they do it and they put little sheets of cotton pads in between your eyelashes (in between top row and bottom row) and you lie there for 20mins afterwards and cant open your eyes as they are drying and the dye sets in...
did that make sense? sorry!! but its good and i get it done every 6 weeks or so(whenever i have time!) i love getting it done its worth it. makes your eyes stand out more & dont have to apply mascara for a few weeks then!