Posted by BathBodySupply.com on 9/12/2022 to Education
Surfactant preparations for this purpose are called "bath foam", "foaming bath", or "bubble bath", and frequently contain multiple surfactants. Used at much higher concentration (for instance on a washcloth or pouf), such products (especially in liquid form) may also be used to wash skin or hair, so they are sometimes marketed for combined purposes.
The practice is popular for personal bathing because of the belief that it cleanses the skin, and that the foam insulates the bath water, keeping it warm for longer.
Bubbles in the water can be produced either by aerating it mechanically (in some cases using jets that also move the water) using equipment installed permanently or temporarily in a bathtub, hot tub, or pool, or by producing gas in the water in a bathtub through the use of effervescent solids. The latter can come as small pellets known as bath fizzies (bath bombs), and they produce carbon dioxide by reaction of sodium bicarbonate (baking soda) with an organic acid (citric acid).