the three main ingredients of this stuff is silicon based chemicals. the 4th is a lab created vitamin e known to be a skin irritant. The last is mineral oil which while safe on plastic could break down and cause a nasty rancid smell over time. I wouldn't use for two reasons, it does not seem like something id want on my hands and there are cheaper silicon based products meant to used in lubrication. this stuff has been reported to damage hair instead of doing what it claims to actually do. just my 2 cents after 10 minutes of google searching.