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 treatments have been pulled from store shelves. The FDA has voluntarily recalled six products from companies like Proactive, La Roche-Posay, and Walgreens. It says testing showed elevated levels of benzene,

The U.S. Food and Drug Administration (FDA) has announced an expanded recall of acne treatment products found to contain elevated levels of benzene, a chemical classified as a known human carcinogen.