This week's experiment was one of those accidental discoveries that I love so much. All my life I have heard about the fact that the outer layer of your skin is made up of dead cells. These dead cells are your first line of defense against germs, harmful chemicals, etc. It is one thing to hear about this dead skin, but it is another thing to actually see it. I happened to be sitting in a beam of light when I scratched my arm and immediately knew what I would do for this weeks experiment.

This experiment is Subscriber Only content.

Subscribe Now, and get full access to this experiment, and hundreds of other experiments and videos.