Which Beauty Gizmos Really Work?

We tested a new crop of gadgets that promise to fight acne, whiten teeth and turn back time. Check out the results.

Credit: Lisa Shin

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The hair zapper

Tria Hair Removal Laser 4X, $449; triabeauty.com

How it works This diode laser emits energy that targets the pigment in the hair follicle, destroying it so hair stops growing.

Our tester's take Within two weeks of treating coarse chin hair, it grew in finer and more slowly. "Though the treatments are a little painful," she said, "they're worth it."

Expert analysis The laser hits a small area, so it's best for the bikini line, armpits and face, says Carolyn Jacob, MD, a Chicago dermatologist.

Next: The acne eraser

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