Amanda Baldwin, chief executive officer, Olaplex, is making key changes to the executive team. Today, Katie Gohman joins the haircare company as chief marketing officer. Next month, Catherine Dunleavy will take over as chief operating officer and chief financial officer. Prior to joining Olaplex, Gohman was with Marc Jacobs. She began her career at L’Oréal and held marketing leadership positions there, as well as Ralph Lauren and Coach. Dunleavy had been president at Away, moving up...