You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Purell Among Few Small CPG Brands to Invest in Loyalty Program Brand Aims to Spread Hand Hygiene Message Via Social Channels By Kate Kaye, Published on July 21, 2014 0 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.