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 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.

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