Ready-to-use spray dental instrument lubricant. It is applied manually after cleaning and before packaging and sterilization. The spray format is easy to use and allows spot treatment of box locks, hinges and jointed items. Safe, non-toxic silicone-free food grade lubricant. No rinsing necessary after application. Unlike traditional mineral oil based instrument “milk”, the water soluble formula in ProLube RTU will never build up or create a sticky yellow film inside box locks during high heat sterilization cycles, unlike traditional instrument lubricants. Formula is a true solution and does not separate into component layers. No shaking required prior to application. Maintains smooth function of jointed and hinged items. Contains anti-corrosive and rust inhibiting agents to protect valuable instruments. Completely permeable to steam and ethylene oxide sterilants. Alternative to traditional mineral oil-based instrument “milk”.