When Mihaela Balu was interviewing for a postdoctoral position nearly two decades ago, she would describe the kind of training she was looking for, and nearly everyone she talked to nationwide said, “You should go to Beckman Laser Institute & Medical Clinic.” Fortunately for UC Irvine, she did. Now an associate professor of dermatology and biomedical engineering, Balu and her team have developed a device that uses a low-power infrared laser to scan beneath the skin surface at a cellular level.