Washing your hair in very hot water
Washing your hair in hot water can cause the same effect as humidity. It also stresses your hair and your scalp, which produces beneficial oils.
It is most advisable to wash your hair in lukewarm water [5].
Overwashing your hair
Washing your hair too often can cause you to strip your hair of the natural oils it needs to be healthy.
“There’s really no need to wash your head more than two to three times per week, depending on your type of hair,” explains Davis. “Otherwise, you break the natural balance with the shampoo, especially if it’s a foamy one.”