NuOil ReNu is a specially made quality oil refresher designed with nourishing properties which fortify and enhance the finish of your NuOil hardwood floor to protect against dirt and penetration of liquids. ReNu Commercial is a heavier concentration of the same ingredients found in Residential ReNu. The heavier concentration of Commercial ReNu is designed for the heavier foot traffic found in commercial applications. All products are natural, organic and VOC free leaving no film on top of the wood.