The National Advertising Division (NAD) has recommended that Procter & Gamble Company discontinue certain claims made for the company’s Olay Pro-X Advanced Cleansing System, following a challenge by L’Oréal USA, Inc.   The advertiser’s campaign included several versions of its claim that the Olay Pro-X Advanced Cleansing System is “just as effective as” or “cleanses as effectively as” the Clarisonic Skin Cleansing System. Although the advertiser stated that many of the challenged versions o...