At inclusion , the forearms/arms of each volunteer were randomized to receive for @ week either an o/w formulation containing licochalcone A ( Glycyrrhiza Inflata root extract ) , decanediol , menthoxypropanediol and -@ - fatty acids ( emollient arm ) or @ % hydrocortisone ( HC arm ) ; after @ week , the application of the emollient and HC were discontinued and the volunteers applied a w/o emollient containing licochalcone A and -@ - fatty acids on both arms for further @ weeks .