Car tires are an integral part of vehicle safety. Learn when it's time to invest in new tires and how to keep them in tip-top shape. Hair spray is a valuable tool for keeping those fly-aways in place. Anna, Kristina and friends get up to some hair-raising experiements to see which brands hold up best. And sure they smell nice, but do room scents do any more than merely mask the odors? The Shopping Bags investigate the difference between natural and synthetic scents. We all know teens love to shop - but do they get any respect? Our mystery shopper shows how young shoppers can get the treatment they deserve in store.