Blue light (clearlight) for acne vulgaris.
D000152:Acne Vulgaris / Q000209:etiology / Q000628:therapy*; D002986:Clinical Trials as Topic; D004307:Dose-Response Relationship, Radiation; D005069:Evaluation Studies as Topic; D005249:Fees and Charges; D007057:Ichthyosis / Q000209:etiology; D010789:Phototherapy / Q000009:adverse effects / Q000191:economics