It's a great video =). Our design is trending towards more of a printer design, with airbrush head(s) attached to curved track able to maneuver and angle around

It's a great video =). Our design is trending towards more of a printer design, with airbrush head(s) attached to curved track able to maneuver and angle around the length and width of a face. The precision to apply foundation will differ from say, eyeliner, but we are confident that the great technological strides in printing technologies would allow us for this accuracy. Having said that, the other design I think you're suggesting, a few very precise robotic arms is equally valid and possible given the strides in robotics within the manufacturing industry. A consideration to this design would be anchoring the head. For the arms to accurately apply makeup would require a user to remain still, so a head rest may be necessary/helpful.