An independent lab analysis found that topical creams and face ashes used to treat acne contain high levels of benzene, a carcinogenic chemical. Getty Images Valisure said that over-the-counter ...

Proactiv’s 2.5% benzoyl peroxide cream, manufactured by Taro Pharmaceutical Industries Ltd., contained as much as 1,761 parts per million of benzene during Valisure’s stability testing, while ...

By contrast, on the 14th day of testing, a Proactiv cream with 2.5 percent benzoyl peroxide tested for nearly 1,800 parts per million of benzene.

Proactiv's 2.5% benzoyl peroxide cream, for example, contained as much as 1,761 parts per million of benzene, while another from Target showed 1,598 parts per million.

Benzene is a chemical used often to make a range of products in the U.S. including detergents, dyes and drugs, according to the U.S. Centers for Disease Control and Prevention.

Researchers said that many of the same products tested in the original analysis, when kept at room temperature, contain levels of benzene within the acceptable limit of 2 parts per million ...

Proactiv's 2.5% benzoyl peroxide cream, for example, contained as much as 1,761 parts per million of benzene, while another from Target showed 1,598 parts per million.

Proactiv's 2.5% benzoyl peroxide cream, for example, contained as much as 1,761 parts per million of benzene, while another from Target showed 1,598 parts per million.