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.

Acne creams from retailers including Walgreens, La Roche-Posay and Proactiv have been voluntarily recalled due to elevated levels of a potentially cancer-causing agent. The U.S. Food and Drug Administration issued a recall notice Tuesday for several lots of six products,