Reducing bleaches have niche uses, such as sulfur dioxide used to bleach wool, either as gas or from solutions of sodium dithionite and sodium borohydride.Д«leaches generally react with many other organic substances besides the intended colored pigments, so they can weaken or damage natural materials like fibers, cloth, and leather, and intentionally applied dyes such as the indigo of denim. These bleaches are called 'non-chlorine bleach,' ' oxygen bleach' or 'color-safe bleach.' Oxidizing bleaching agents that do not contain chlorine are usually based on peroxides such as hydrogen peroxide, sodium percarbonate, and sodium perborate. 'Bleaching powder' usually means a formulation containing calcium hypochlorite. Since pure chlorine is a toxic corrosive gas, these products usually contain hypochlorite, which releases chlorine when needed. While most bleaches are oxidizing agents (chemicals that can remove electrons from other molecules), some are reducing agents (that donate electrons).Д¬hlorine, a powerful oxidizer, is the active agent in many household bleaches. Д«leaches work by reacting with many colored organic compounds, such as natural pigments, and turning them into colorless ones. Bleaches also have other minor uses like removing mildew, killing weeds, and increasing the longevity of cut flowers. They are also used in many industrial processes, notably in the bleaching of wood pulp. Many bleaches have broad spectrum bactericidal properties, making them useful for disinfecting and sterilizing and are used in swimming pool sanitation to control bacteria, viruses, and algae and in many places where sterile conditions are required. It often refers, specifically, to a dilute solution of sodium hypochlorite, also called 'liquid bleach'.

Bleach is the generic name for any chemical product that is used industrially and domestically to remove color from a fabric or fiber or to clean or to remove stains in a process called bleaching.

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