Ever wonder what your daily product arsenal is leaving behind on your skin? A new, high-tech study using a mass spectrometer found that our bodies are covered with chemical residue from skin and hair care products, even when we haven't used them for three days. With the skin being the body's largest organ, capable of absorbing whatever it comes into contact with, it might be time to start reading personal care ingredients like we do nutrition labels. How much attention do you pay to the ingredients in your daily routine? Will this research change how you think about beauty and grooming? Let us know in the comments.