Abstract: An edge-lit device for providing light-based dermatological treatment is provided. The device may include a panel having internally reflective properties for reflecting light, the panel defining a front surface, a rear surface, a perimeter, and one or more edges extending along one or more portions of the perimeter. A rear reflector may be disposed adjacent the rear surface. The device may include one or more light emitting diodes (LEDs) positioned along at least one of the panel edges and configured to emit light into the panel such that at least a portion of the LED-emitted light reflects off the rear reflector and projects out of the panel through the panel front surface. The wavelength of the LED-emitted light may be suitable for dermatological treatment, such that LED-emitted light projecting out through the front surface of the panel may be useful for providing dermatological treatment to a user.