Why does mouthwash foam?

It is due to the action of Hydrogen peroxide, a cleaning and disinfecting agent manufacturers include in the mouthwash. read more

It is due to the action of Hydrogen peroxide, a cleaning and disinfecting agent manufacturers include in the mouthwash. It serves the purpose to kill millions of germs left behind from your best attempt at oral health, going into areas your tooth-brushing cannot reach. read more

Also, any time hydrogen peroxide is killing germs, it will foam-- so there can be some foaming when you are using hydrogen peroxide as a mouthwash. Using hydrogen peroxide as mouthwash is particularly good if you've got canker sores. read more

When the catalase comes in contact with hydrogen peroxide, it turns the hydrogen peroxide (H 2 O 2) into water (H 2 O) and oxygen gas (O 2). Catalase does this extremely efficiently -- up to 200,000 reactions per second. The bubbles you see in the foam are pure oxygen bubbles being created by the catalase. read more