Therative, a Livermore, Calif., medical-device maker, raised $9 million in a third round of financing, largely to fund television ads for its consumer-oriented acne product.

Therative makes and markets a pimple-clearing device called ThermaClear, which received FDA “clearance” for direct consumer sales last year. The device releases pulses of heat designed to kill bacteria inside pimples, supposedly in a manner similar to laser treatments offered by dermatologists. The company sells ThermaClear over the Internet for $149.95.

Bessemer Venture Partners led the round, which also included Foundation Capital, RWI Ventures and Band of Angels. Therative had previously raised more than $5 million.

The company’s release is here; VentureWire has more (subscription required).