Oster 5 in 1 Spray acts as a virucide, bactericide and fungicide while cooling, lubricating, disinfecting and providing protection against rust. Oster Spray is an effective solution to maintain clean blades. A quick spray on the top and bottom of the blades provides smoother clipping action, prolongs equipment life and helps reduce friction and heat build-up. How to apply While the clipper is running, hold can about 6 inches away from blade and spray the underside and topside of the blade before each cut while clipper head is pointing downward. Ideal application time is anytime the clipper blade feels warm. To prevent heat build up, spray the clipper blade with 5 in 1 Spray® when changing comb attachments from one size to the next. Can be used with any clipper or trimmer. When using a detachable blade clipper, spray each blade used during the cut. Benefits Disinfects Instantly cools the blade Gives light lubrication allowing the blade to run cooler and stay sharp longer