Bleach is a chemical substance commonly used for cleaning and disinfecting. It typically contains sodium hypochlorite or hydrogen peroxide, which are effective at killing bacteria, viruses, and fungi. Bleach is often diluted with water for household use and can be found in various cleaning products. In addition to its cleaning properties, bleach is also used in the textile industry to whiten fabrics and remove stains. It can be harmful if ingested or if it comes into contact with skin, so safety precautions, such as wearing gloves and ensuring proper ventilation, are important when using bleach.