benzoyl peroxide

noun

: a colorless to white crystalline compound C₁₄H₁₀O₄ that is used as a bleaching agent (as for whitening flour), as a catalyst for the synthesis of polymers (such as polystyrene), and medically as an antibacterial and keratolytic agent especially for the topical treatment of acne

Examples of benzoyl peroxide in a Sentence

Recent Examples on the Web

In the case of the new study, benzoyl peroxide can degrade into benzene. —Elizabeth Yuko, Health, 17 Oct. 2024

The researchers tested over 100 benzoyl peroxide acne products purchased from major retailers in six states and found high benzene levels in several products. —Fran Kritz, Verywell Health, 11 Oct. 2024

Idriss says that benzoyl peroxide is great for killing the acne-causing bacteria and reducing the inflammation that comes with flare ups. —Jenna Rennert, Vogue, 9 Oct. 2024

This would include those that are made with hydrocarbons like benzoyl peroxide, an agency spokesperson said. —Anna Edney/bloomberg, TIME, 7 Oct. 2024

Word History

First Known Use

1867, in the meaning defined above

Kids Definition

benzoyl peroxide

noun

ben·​zo·​yl peroxide

ˈben-zə-ˌwil-,

-ˌzȯil-

: a white crystalline compound used in bleaching and in medicine especially in the treatment of acne

Medical Definition

benzoyl peroxide

noun

: a white crystalline flammable compound C₁₄H₁₀O₄ used in bleaching and in medicine especially in the treatment of acne

Note: Benzoyl peroxide is marketed the trademark Epiduo when used in combination with adapalene.