It's time for the long-haired ladies to ditch the layers: Blunt, straight-across ends like Leslie Mann's are having a major moment. Rojas Styling Tip: Apply a heat protectant lotion, then blow dry your hair with a paddle brush from one side to the other. Then, section off and straighten with a flatiron. Part your hair where you desire, and use a strong holding hairspray to keep the part down and intact. Finally, apply serum for shine, and give the ends one last visit with the straightener.