FRESHEN UP WITH DRY SHAMPOO: "Three days after a blowout, my hair looks limp. (If you have oily hair, this might happen sooner.) So, before my shower, I flip my head upside down and spray the roots with Oscar Blandi Pronto Dry Shampoo Spray [see "Our Must-Have Hair Helpers," page 40] as I tousle them with my fingers. Then I shower with a shower cap, and when I take my hair down afterward it has more volume and the oiliness is gone."