You might have heard that sure, parabens and other chemicals in your skin care are bad if ingested, but they can’t penetrate your skin so you don’t have anything to worry about. The fact is, much of what we place on our skin is absorbed into our bloodstream. Just think about nicotine and birth control patches. We administer effective doses through the skin to our bloodstream, enabling us to forego a daily oral pill in lieu of a patch that prevents pregnancy. Or a patch that keeps nicotine in our system without the side effects of smoking, allowing us to wean off of an addiction. While there may be some chemicals that are too large to enter our bloodstream, the majority are small enough to penetrate.