U.S. health officials are asking retailers to pull a small number of acne creams from their store shelves after government testing found they contain slightly elevated levels of a chemical associated with cancer.

Some popular acne creams are being recalled because the product may contain elevated levels of benzene, a chemical that causes cancer, the FDA said.

Some acne treatments from brands including Walgreens, Proactiv and La-Roche Posay have been voluntarily recalled for containing elevated levels of the carcinogen benzene, the Food and Drug Administration announced Tuesday.