Arm & Hammer Oral Care has signed a two-year deal with actress Alison Sweeney, best known for her starring roles in “The Biggest Loser” and “Days of our Lives.” Sweeney will appear in the brand’s advertising, public relations and digital media campaigns and she will also help introduce a series of new products to the brand’s oral care portfolio. “We could not be more proud to welcome Alison Sweeney into the Arm & Hammer Oral Care family,” said Tim Seitter, VP-oral care marketing, Chu...