Toilet cleanser comes under the general classification of liquid detergent. Until the end of the 19th century, soap, the alkali metal salt of long-chain carboxylic acids was the only man-made surfactant. With the spread of technology, the technical shortcomings of soap i.e. it’s instability towards water hardness and acidity were felt particularly acutely in the textile industry. Synthetic detergents as the name implies are synthetic substances having molecular structures which has been tailored to endow the substances with the essential properties of soap with the advantage of not been precipitated by the calcium and magnesium salt in hard water. The term detergent is often used interchangeably with surfactant (a contraction of surface-active agent). More often, detergents refer to a combination of surfactants with other substances, organic or inorganic, formulated to enhance functional performance, specifically cleaning over that of the surfactant alone.