And melanocytes release a chemical, a pigment known as melanin. And melanin doesn't only give us our skin color it also actually absorbs some of that UV radiation which protects us from damaging our skin. Now, not only that, but the skin actually creates a physical barrier that does not allow bacterial cells and viral agents to actually get into our body. The skin also protects us from dehydration and it protects us from a wide variety of different types of chemical agents and harmful chemical things. So if some type of harmful molecule gets onto our skin there is a very high probability that the skin will not allow that harmful chemical to actually go through the skin and enter our organs found inside our body. So this is the function in protection.