Emulsifiers- Simply put, emulsifiers are small droplets of oil that are dispersed in water or small droplets of water that are dispersed in oil. Either way, the droplets that are dispersed are meant to alter the surface tension of the water and oil phases thus preventing separation. The result is usually a homogenous product that not only produces an even skin texture but is also safer to use. The emulsifiers also act by reducing trans-epidermal water loss that sometimes causes itchiness. Allergic reactions to some oils in cosmetics have also been reduced by the use of emulsifiers.