Both @Jim Elliott and @Dean have said that baby oil is OK for lubricating blades. I don't have any of that.....but I do have loads of Ballistol. It's a fairly light mineral oil commonly used for firearm maintenance. The interesting bit is that it emulsifies in water rather than separating......so if the blades are wet it emulsifies and dries out with a protective and lubricating layer. Anyone have any opinions??