who needs a razor when you've got the shaving helmet? here's jeanne moos. >> reporter: want to shave your head without lifting a finger? >> so this is a shaving helmet, four-blade array mounted on teflon-coated aluminum rails powered by two cervos. >> reporter: some of us in the media, it was a close shave this one i believe for about ten seconds. they test it on a guy. >> how does it feel? >> a little strange. >> reporter: and when the helmet comes off. >> any nicks? >> oh, wow. nice it looks smooth. >> reporter: it is smooth all right, a smooth fake, thanks to a pair of twins. >> ridiculous. >> reporter: it looks too small. >> yeah. >> i think you have a bigger head. >> reporter: while the camera pan aid way for 15 seconds. >> shave your head manually -- >> reporter: twin who had hair was replaced by the twin whose head was already shaved. the switch a roo is revealed in the follow-up video, the making