Palomar Medical Technologies (PMTI)
Rank: 3 (Previous rank: 6)
Headquarters: Burlington, MA
Why it's hot: These days even 20-somethings are opting for a nip and a tuck. That's spiked demand for Palomar's six-figure gear, which uses lasers and light pulses to tighten skin, vaporize blemishes, and remove unsightly body hair.
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