THE CLAIM A battery-operated wand uses micropulses to relieve undereye bags and help skin-lightening and collagen-boosting agents penetrate skin; polyamide textile fibers produce an instant firming effect. THE EXPERT SAYS "Gentle massaging can temporarily reduce puffiness, but it won't work on protruding fat or excess skin. The fibers in the cream account for the tightening you feel," says N.Y.C. dermatologist Heidi Waldorf. OUR VERDICT Straight out of the tube, the cream was as thick as a balm, but the vibrating applicator helped it soak in quickly (phew!) and gave our swollen eyes instant visible relief.