Ever read the ingredients on your beauty products? Our friends over at The Beauty Brains recently did and found that one Oil of Olay product contained a surprising ingredient--Butane, aka that stuff that goes into cigarette lighters.

But is washing your face in butane safe? The brains seem to think so -- while it's not ok to wash your face in lighter fluid, having butane in your face wash isn't a problem. Butane is used as a propellant in aerosol cans, and that's about the end of it's use. Once it's exposed to air, it quickly evaporates and most likely doesn't even end up on your face.

Interesting, huh? The Beauty Brains have lots of inside info to share -- head on over there to learn more about your beauty products.

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