PARIS — The appointment of Alexis Perakis-Valat as the incoming chief executive officer of L’Oréal USA and president, North America, succeeding David Greenberg, has set off a cascade of changes at the L’Oréal group’s executive committee level. Handovers will start Oct. 1 and run through Jan. 1. RELATED: L’Oréal USA Names David Greenberg Chairman and Alexis Perakis-Valat CEO More from WWD Fabrice Megarbane is being appointed president of the Consumer Products Division, following Perakis-Valat’s departure. M ...