Hot Tip: Jella Jojoba (that's hella 'ho-HO-ba') for your hair and scalp. If your hair is dull or your scalp is dry, or — horror — both, jojoba can restore supple shininess in a snap. My friend and stylist at Marquee Salon, Amanda, turned me on to it. Derived from shrubs native to the Mojave desert, jojoba oil's chemical makeup is similar to that of sebum, the oil we naturally produce to keep our skin and hair healthy, so it's easily absorbed and less likely to irritate skin. To use, add a small amount to your normal conditioner, or for a deeper treatment, massage a generous amount into your hair and scalp at night and wash it out in the morning (use a towel to avoid giving your pillow a deep oil treatment).