W ASHINGTON — 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. The Food and Drug Administration said several lots of six products containing benzoyl peroxide are being recalled, including Walgreens Acne Control Cleanser, Proactiv Skin Smoothing Exfoliator and La Roche-Posay Effaclar Duo Dual Action Acne Treatment. The full list and

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