Beauty and personal care brands have dominated Engagement Labs’ fifth annual ranking of America’s most loved brands. The most positive offline and online conversations with top rankers include Dove, Mary Kay, Clean and Clear and Clinique.    The analysis ranks the most-loved brands based on net positive conversations happening online via social media and offline via face-to-face conversations as well as phone, emailing, texting, IM’ing, video chat— in other words, via any channel other t...