Tip No. 1: Dye your hair

"Whenever I dye my hair, I find that my hair gets less oily." -- Briana L.

Here's why it works: Hair dye has chemicals that lift your hair away from the scalp, which makes it harder for oil to travel up the hair shaft. Whether you color all of your hair or simply put highlights near the roots, it'll help dry out the oil, says celebrity hairstylist Angelo David of Angelo David Salon.