Benzoyl peroxide

Benzoyl peroxide is a chemical compound (specifically, an organic peroxide) with structural formula (C
6H
5−C(=O)O−)
2, often abbreviated as (BzO)2. In terms of its structure, the molecule can be described as two benzoyl (C
6H
5−C(=O)−, Bz) groups connected by a peroxide (−O−O−). It is a white granular solid with a faint odour of benzaldehyde, poorly soluble in water but soluble in acetone, ethanol, and many other organic solvents. Benzoyl peroxide is an oxidizer, which is principally used as in the production of polymers.[2]

As a bleach, it has been used as a medication and a water disinfectant.[3][4] In specialized contexts, the name may be abbreviated as BPO.

As a medication, benzoyl peroxide is mostly used to treat acne, either alone or in combination with other treatments.[5] Some versions are sold mixed with antibiotics such as clindamycin.[6][7] It is on the WHO List of Essential Medicines,[8] and, in the US, it is available as an over-the-counter and generic medication.[9][6] It is also used in dentistry for teeth whitening.

Benzoyl peroxide is also used for bleaching flour, hair, and textiles[10][4] It is also used in the plastics industry.[3]