Surfactants: In Solution, at Interfaces and in Colloidal DispersionsSurfactants today you have probably eaten some, or rubbed others on your body. Plants, animals (including you) and microorganisms make them, and many everyday products (e. g. detergents, cosmetics, foodstuffs) contain them. Surfactant molecules have one part which is soluble in water and another which is not. This gives surfactant molecules two valuable properties: 1) they adsorb at surfaces (e. g. of an oil droplet in water), and 2) they stick