WARNING: Don’t watch this video unless you want to be grossed out.
You’ve probably had your fair share of encounters with hydrogen peroxide (H2O2). Whether you’ve used it to clean a cut or scrape, or to rinse out your mouth, you know that this antiseptic creates a fascinating foaming effect.
But do you know the reason behind why it foams up?
Apparently, this is because our blood and cells contain an enzyme called catalase. And when the hydrogen peroxide comes into contact with the catalase, pure oxygen bubbles are created.
In the video above, you’ll see what happens when drops of blood come into contact with some hydrogen peroxide. Needless to say, it’s definitely not pretty.