It's summertime and we're baring it all, but not without the help of a few trusted beauty products. Sunscreen, bronzer, and the sheerest makeup possible are all must-haves, but what about products to tighten jiggly thighs and smooth cellulite? We tested products that promise perfect posteriors and found out what really works. Here we reveal the truth about four of the (sometimes uncomfortable) treatments -- click through for three more products you can use in the war on wobble. 
The Elemis Skin Brush ($44), made of prickly cactus bristles, sloughs off dead cells to reveal the healthy layer beneath. Buff dry skin from your feet up to your bum before showering. "Yes, it hurts," one tester confesses, "but it really softens skin, so it's worth it."
Nivea Good-bye Cellulite fights cellulite from every angle. After the slightly sticky gel ($13.99) dries on thighs, "they're more taut." The feeling is fleeting, but the product is sold with pills that claim to metabolize fat over time too.
Does "no pain, no gain" hold true? Wage war on wobbly bits with the Biotherm Celluli Roller ($19.50). "It pinches and leaves red track marks," says our fearless tester. "My cellulite is improved, but it's certainly not gone."
Shiseido Body Creator Concentrate ($65) is a peppery gel with collagen-boosting extracts that "tingles and leaves skin firmer," says our tester.
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