Hydrogen peroxide is a chemical compound with the formula H2O2. It appears as a clear liquid, which can be purchased over-the-counter in many countries for various uses such as a disinfectant or a bleaching agent. In its pure form, hydrogen peroxide is a powerful oxidizer and can cause explosive reactions when mixed with certain substances. However, it has also been studied for its potential health benefits, including as an antioxidant and anti-inflammatory agent.