Is Good Skin Genetic -- Or Can Products Help? Olay Solves The Riddle Using Twins

Photo: Courtesy of Olay. By now even toddlers are familiar with those skin-care ads that show a split portrait of a person who used a product on one side of their face and not the other. That's been the beauty standard for many companies on how best to demonstrate the efficacy of their products. A tester slathers one side of their face with the latest miracle cream for a few weeks time and leaves the other bare as a control. At the end of the study, you then see the "dramatic" difference in the ...