Hair Contact, a new type of wig technology, may make embarassing toupee flapping a thing of the past. The fake hairs are so thin (30 microns, less than a 1/3 of the thickness of a sheet of paper) that they meld into the skin without the use of heavy glues. Hair Contact adheres so well that even pulling or contact with water or heat doesn't cause it to start sliding off.
I can't tell exactly what's going on during the application process, but it looks like a huge hatful of hot air is necessary to meld the wig to your head.
From Japan Today.