"There are no rules where one type of brush is specific to one area," says Nina Park, who works with Bella Hadid and Olivia Palermo. We tapped Park, editorial makeup artist Christopher Ardoff, and Robert Sesneck (who counts Amandla Stenberg, Keirnan Shipka, and Chrissy Teigan as clients) to weigh in on brushes they swear by. Your personal …