It can also be that your products have humectants in your products. Humectants can make your hair poof out in high dew points. That's why it's important to know your hair properties & base your products off of the hair properties/dew points in your area. But beware, humectants can dry out your hair in low dew points by drawing moisture from your hair because it can't draw moisture from your environment. So your don't want to use humectants in extremely hight dew points (60+) or extremely low dew points (30-).