Protection First Class (PFC) penetrating lubricant and rust inhibitor represents company’s entry into a new category of environmentally responsible formulations, as indicated in a 99 percent pure cosmetic-grade lanolin composition. Traditional penetrating lubricants use solvents to lower the viscosity of the oils they contain, enabling them to flow more easily or to be dispensed as a spray. The solvents break down some of the essential properties of the oils they mix with and, after quickly evaporating, leave a dry, varnish-like residue that can collect dirt and may actually increase surface friction—thus impeding mechanical action.