Mar 1, 2021
“Hux distrusted masks on principle, but he was glad for Ren’s because it spared him the indignant assault of the Supreme Leader’s hair. A good leader led by example, and Ren’s hair was the furthest thing from regulation. A small detail, to be sure, but details mattered, and this one represented everything Hux hated about Ren. He was the exception to everything. Outside the rules. Disordered. When Hux finally took his rightful place as Supreme Leader, the first thing he’d do was make Ren cut off his hair.“
-TROS novelization.