and sanitizers were tainted by benzene. Sunscreens and dry shampoos too. Now acne treatments are joining the list of widely used consumer products found to contain high levels of the chemical linked to cancer.
New Haven, Connecticut-based Valisure LLC, the testing laboratory that filed Tuesday’s petition and uncovered the previous risks, has positioned itself as a gatekeeper for consumers. Valisure gained prominence conducting product research and has deals with large health-care systems, including Kaiser Permanente and the U.S. Department of Defense, to test drugs used by their members and weed out substandard treatments.
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 a similar cream from Target reached 1,598 parts per million and a treatment from Estee Lauder Cos.’s Clinique hit 401 parts per million.
Representatives for Taro Pharmaceuticals and Estee Lauder didn’t respond to requests for comment. Target declined to comment. Reckitt fell 2% and Unilever dipped 0.4% in London, while Estee Lauder slid 1.3% and Taro tumbled 2.4% at the close in New York. “This has been well known for a long time,” he said in an interview. “All that was needed was for someone to check on it.” filed last year for a method to prevent benzoyl peroxide from breaking down into benzene in drug products. The lab tested other kinds of acne products with different ingredients, mainly salicylic acid, and did not find elevated benzene levels in those.
Valisure stands behind its testing methods and points to its certification from the International Organization for Standardization, which sets testing guidelines for all kinds of products including drugs. In a statement Wednesday, Valisure said the results from its research on acne treatments were most similar to its investigation into those ranitidine products.
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