Our skin is a (bio)plastic. It is indeed a completely useless term. Distinguishing between "synthetic" and "non-synthetic" isn't very useful either; all these c

Our skin is a (bio)plastic. It is indeed a completely useless term. Distinguishing between "synthetic" and "non-synthetic" isn't very useful either; all these compounds have in common is that they are toxic carbon-based polymers. It's the fact that they're toxic that is important, not that it's a carbon-based polymer.