I had been doing monthly sessions of Starwalker laser for hyperpigmentation and acne for almost a year. 9 months ago I started developing hypopigmentation in the jawline and neck after a session I did after returning from a trip where I was out in intense heat and sunlight. It triggered some hyperpigmentation in my jawline which was clear just the month before the trip. I did a few sessions after but the hypopigmentation got worse. Is this going to be permanent?