Guthy-Renker (pronounced: Guh-thee Ren-ker) is a Santa Monica, California based direct-response marketing company that sells products directly to consumers through infomercials, television ads, direct mail, telemarketing, e-mail marketing, and the Internet. As of 2014, it has 8 different product groups, with an emphasis on celebrity-endorsed beauty products.Guthy-Renker was founded in 1988 by Bill Guthy and Greg Renker.