Detergent is a cleaning agent that helps remove dirt, grease, and stains from various surfaces and fabrics. Unlike soap, which is made from natural fats and oils, detergents are typically synthetic and contain surfactants that enhance their cleaning power.

Two examples of detergents are : Sodium lauryl sulphate and sodium alkyl benzene sulphonate.

The use of detergents can have significant effects on human health and the environment. Many detergents contain harmful chemicals, such as phosphates, bleach, and artificial fragrances, which can irritate the skin and respiratory system. Prolonged exposure to these substances may lead to allergic reactions or other health issues.

Environmentally, detergents can contribute to water pollution. When washed down the drain, they can enter waterways and disrupt aquatic ecosystems. Phosphates, for instance, can lead to algal blooms, depleting oxygen levels in water and harming fish and other marine life. Additionally, the production and disposal of synthetic detergents often result in carbon emissions and waste, further impacting the planet.