Hot Stuff: 12 Beauty Breakthroughs for Summer

Makeup Eraser

Even long-wear formulas of mascara, liner, and lipstick can break down in steamy summer conditions, causing embarrassing streaks and smudges. Stash the L'Oreal Paris Clean Artiste Makeup Corrector Pen ($10.95, lorealparis.com) in your handbag. Like an eraser, it wipes away minor mishaps with a flick of the wrist.