A main container and a sub container for mixing cosmetic and a cosmetic product including the same provides a cosmetic product including a first container providing a first storing space which stores a first fluid, and in which fluid can be mixed; a discharging unit which discharges a fluid stored in the first container to the outside; and a second container which can be coupled to the first container, and which can discharge a second fluid stored in the second container to the first storing space. The second container has a storing state to store the second fluid and an open state to discharge the second fluid, wherein the second container to the open state by the discharging unit being coupled to the first container, and wherein as the second container is converted to the open state, the second fluid is discharged to the first storing space.