I recently had a haircut at a salon and the hairdresser was heavy handed during the styling process. She tugged very hard and my scalp was sore for a few days aftery appointment. I’ve noticed my hair thinning and an extended part in the back of my head recently, like a cowlick. Is it possible to have hair loss from one salon visit due to overstyling? If so, are my hair follicles / roots permanently damaged?