A nail polish display system includes a case, which may take the form of a shelving system or platform, sized to hold and display multiple bottles of nail polish. The bottles are attached to coupling devices, such as clamps, sleeves, magnetic couplers, etc. to an agitator, which preferably takes the form of a rotatable rod. A motor operates the agitator to move, rotate or otherwise agitate the bottles and therefore sufficiently and continuously mix the nail polish within the bottles. The system may include one or more sensors configured to detect the presence of a patron, configured to detect a position of the motor or agitator, and/or configured to detect when a door to the case is being opened. Further, the motor may be programmable and receive instructions from either a controller or control logic using input from one or more of the sensors.