So little effort, so much payoff… Editorial stylist Erickson Arrunategui makes the season’s easy hair look even easier… “Fashion week hair has been really laid back,” admits NYC-based stylist Erickson Arrunategui, who you may already recognize for his work with FP beauties like Taylor LaShae. “The updos still have that effortless vibe. The runway is a time to focus on the fashion — the hair should go with the look, but not overpower it.” Like music to our ears, Erickson hits on…