Had a late night and know that you won’t have time to wash your hair in the morning? Dry shampoo works well at mopping up excess oil, but it’s even better as a preventative measure. Simply spray a large amount into the roots before bed ands it will soak up the oils as they are produced overnight, meaning you won’t have to worry about greasy hair in the morning. Simply run a brush through it when you wake up and you’re done!