The Metropolis vented tunnel brush features Silver Nano Technology ionic bristles and a ceramic head. Each bristle is infused with silver nano particles to purify and remove odors , shine hair and reduce fly-aways. The ceramic coating generates gentle heat and eliminates heat stress on hair. Silver Nano Technology is a recently discovered process that uses nanotechnology to micronize particles of silver. This makes it now possible to reap the scientifically recognized benefits of silver. For centuries silver (Ag) has been revered for its amazing therapeutic properties and effectiveness. The nano silver eliminates 99% of bacteria, fungi and hundreds of other disease causing microorganisms by inhibiting multiplication and growth and preventing transfer. Having these silver ions of nano size emitting from the bristles in a colorless anti-bacteria armor, Metropolis brushes are able to benefit from the safe and sanitizing power of the sophisticated silver nanotechnology. Bacteria are blocked from contaminating and “odorizing”, providing a safer and cleaner environment in the home or workplace.