Beiersdorf, Norwalk, Conn., will launch an extension of its Eucerin skin lotion with Coenzyme Q10, a substance present in young skin and stripped away with age. Eucerin Q10 will be in stores in fall, backed by a $5 million print campaign from Sawtooth Group, Woodbridge, N.J. Beiersdorf's Nivea was the first Q10 product in the U.S. market in April, when it launched a Q10 extension of its Nivea Visage line of facial moisturizers.