WEN by Chaz Dean, manufactured and sold by infomercial giant Guthy-Renker, is a hair care brand endorsed by celebrities with enviably glossy manes like Brooke Shields, Alyssa Milano, and Angie Harmon.

Chaz Dean is a hairstylist to the stars. His clients include Brooke Shields and Angie Harmon, both of whom also act as spokeswomen for Dean's own line of haircare products, called Wen. Wen ...