Light and laser therapy for acne: sham or science? facts and controversies
Abstract
It has long been known that light is helpful in acne. Teens recognize that summer sun diminishes pimples, and wise pharmaceutical companies (which is limiting) know that a drug trial ending in sunny months will have an elevated placebo response.
Department of Dermatology and Cutaneous Biology, Jefferson Medical College of Thomas Jefferson University, Philadelphia, PA 19107, USA
ABSTRACT