OILY ROOTS?

Mattify them with a mist

Once the temperature rises, even freshly washed tresses can take on a slick, greasy look within seconds of stepping outside. The reason: Heat from the sun opens pores on the scalp, causing a spike in sweat and oil production that leaves behind an unflattering sheen. Celebrity hairstylist Mike Petrizzi, who’s worked with Joan Jett and Mandy Moore, suggests whipping up a degreasing spritz made with cornstarch (a common ingredient in dry shampoo for its powdery, absorbent texture) and rubbing alcohol (an astringent). Together, they work to eliminate moisture from the scalp down to hair’s ends.

TO DO: In a spray bottle, add 1 Tbs. of cornstarch, 2 tsp. of rubbing alcohol and 1⁄2 cup of water, then shake to combine. Lightly spritz the mist onto oily areas, then massage into the scalp with fingertips. Tip: Since too much alcohol can dry out locks, use the spray sparingly (no more than twice a week).