What are Surfactants?
A surfactant is a substance that reduces surface tension of a liquid in which it is dissolved. Here is a great illustrated video to explain how surface tension works in water: https://www.youtube.com/watch?v=-jftkF5e6jY So how do surfactants work when introduced to water (H20)? Surfactants work by holding oils and dirt in the suspension of the bubbles using hydrophobic tails that attract the oil and hydrophilic parts that are attracted to water. When the bubbles are rinsed out, the dirt and oil rinse as well because they are attached to the surfactants. This is the basic principle behind shampoos.