The service is free (for now?) and basically lets you “make over” yourself or your friends. It’s extremely simple to use: you just upload a picture, point out to the software where the eyes and mouth are and then you can apply lip stick, lip gloss, mascara and a whole bunch of other things.
The website warns you to upload “good” pictures: i.e. frontal headshots, high resolution, good lighting etc., but actually it works pretty well with even crappier shots as you can see from the image on the right.