Light Spa examines the bodily affect of light as pseudoscientific therapy, and the psychological and physiological effects harnessed by non-lethal weapons in the context of law enforcement and the military. Visitors experience a continuous light program immersed inside an immaterial nucleus created by 41 radially arranged controllable lights. Authorized by a personal magnetic card, the generated program shifts from mesmerizing firefly motifs to incapacitating scanning and flashing patters, creating powerful illusionary afterimages and alternate realities for the viewer.