Slather on a stimulant-laced cream before you dare to bare in anything short-short, and it will tighten skin for hours. Think of it as invisible Spanx.
Why it works: Caffeine temporarily eliminates water in the connective tissue, making devilish dents less noticeable. Sorry, but downing a double espresso won't do it. Look for a cellulite cream with caffeine or aminophylline and theophylline, two of its chemical cousins, headlining the ingredient list.
Before applying, exfoliate with a loofah or body scrub, suggests Marcia Kilgore, a spa expert in NYC and founder of Soap & Glory skin care. "Exfoliating will get rid of dead surface skin cells, which would otherwise block penetration," she says. Then work in your cream like the strongest masseuse who's ever laid hands on you. "The friction warms the skin, making it more receptive to ingredients," explains Ranella Hirsch, M.D., a dermatologist in Cambridge, Massachusetts.
Also smart: Curb salt intake. L'Oréal scientists had test subjects apply caffeinated cellulite cream to one leg for a month, and also follow a healthy eating plan that limited excess sodium. After four weeks, the cream-treated leg had fewer dimples, but cellulite on both legs improved, a clue that healthy diet plays a small but noticeable role. Hey, every bit helps!
Check out a few of our favorite products, at left: Moisturize and firm at once with Shiseido Advanced Body Creator Aromatic Sculpting Gel, $58. A combo of caffeine and microscopic beads makes Bliss Fat Girl Slim, $32, a super smoother. Vichy CelluDestock, $40, has salicylic acid to help ingredients such as caffeine penetrate better.