I have long thick curly hair. Just spent a week on a cat in Nov for sailing school.
The snorkel mask headband was awful for pulling out & tangling my hair. I just ordered a neoprene snorkel head strap for our upcoming trip in March (less than $10 on Amazon)
My routine was: jump in the water to get wet. Soap up - including hair - on the transom/steps. Jump in and rinse. Climb out & use conditioner and then rinse off completely - hair too - with fresh water. Left my hair down and let it air dry in the evening and it was pretty dry by bedtime. I wore it in a ponytail during the day to keep it out of my face. The ocean breezes at night were enough to air dry my hair.