Toss your head upside down, twist hair into a high, loose bun, then pin it in place, says N.Y.C. stylist Greg Ruggeri. The bun helps keep strands smooth until you get inside. Another solution: "A silk scarf works wonders," Ruggeri says. Have one knotted stylishly on your handbag; then, when it's drizzling, fold it into a triangle, cover hair, and tie ends under your chin. Silk fabric is slippery, he says, so it won't ruffle your hair and muss up your look.