750g Sodium percarbonate is a natural disinfectant and stain remover The ingredients are derived from raw materials (salt, water and chalk). It's an excellent natural bleaching agent (oxygen bleach), stain solver, softens water and tremendously increases the efficiency of cleaning products. When added to water at temperatures over 40°C, it releases oxygen which acts as a powerful stain remover and disinfectant. Tackles even the most stubborn of stains, such as tea, coffee, red wine, fruits, grease, blood. It so said to be one of the most environmentally safe cleaning agents, because of the lack of harmful chemicals.