Benzoyl peroxide (BPO) drug products, commonly used for extended periods of time to treat acne and rosacea, degrade into carcinogenic benzene when not refrigerated, a study published in the ...
Among 111 prescription or over-the-counter products for acne that contain benzoyl peroxide (BPO), 38 (34%) contained benzene levels above the US Food and Drug Administration (FDA) limit of 2 ppm ...