Claudia Poccia is ready to turn her makeup artist brand into a superstar. In fact, the former global president of Avon’s Mark brand who took the helm at Gurwitch Partners eight months ago, is confident she can create a $500 million to $1 billion company based on such brands as Laura Mercier and RéVive. Right now, Gurwitch’s wholesale business is estimated to be $180-240 million, with Laura Mercier accounting for 80% of sales, according to sources. Laura Mercier is a 15-year-old ma...