Abstract: A tire shiner device used in automatic carwash applications including a dual sectioned conservation reservoir designed to reapply excess shiner fluid to a rotary brush by orienting the reservoir in close proximity to the rotating circumference of the brush allowing the brush to sweep along the surface of the reservoir and thereby continually maintaining a desired level of saturation. The dual-sectioned reservoirs containing the excess fluid for reapplication can each be adjusted manually or optionally spring-loaded to provide a consistent contact between the rotary brush and the reservoir as the brush warps or wears. Additionally, the tire shiner device confines the shiner fluid application to the tire sidewall region using a containment shield to help prevent unwanted application to the car wheels or body.