Think pink. At least that’s what’s on the minds of many consumers. Mary Kay ranked No. 1 among all cosmetic brands in consumer loyalty according to the 2010 Brand Keys Customer Loyalty Engagement Index. Additionally, Mary Kay achieved the No. 12 position on Brand Keys Top Loyalty Leaders List which ranks consumer loyalty among the 518 brands assessed. That list also includes other well-known brand names like Apple iPhone, Amazon and Google. Mary Kay also ranked No. 1 in consume...