How Does Soap Work? - Ida's Soap Box
Apr 18, 2015·It is because the fats and oils soften or melt in hot water, which allows them to attach more readily to the hydrophobic end of the soap molecule. In turn, that makes it easier to rinse away. Soap is a natural surfactant. A surfactant is any substance that tends to reduce the surface tension of a liquid in which it is dissolved.