A dispensing device includes inner and outer compartments for housing two different cosmetic liquid materials therein, the outer compartment secured to a cap by threading; a spring biased valve for blocking both openings of the inner and outer compartments when the device is in an inoperative position; and an outlet assembly partially fastened in the valve. An individual may unfasten and remove the cap from the device to unblock the valve, and squeeze both the outer and the inner compartments to push the cosmetic liquid materials to mix in the outlet assembly prior to dispensing out of the device.