Abstract: Device (100, 200, 400) for packaging two products (A, B) separately and dispensing a resulting mixture (M) on a first use, said device comprising a plug (300) arranged between a lower container (110, 210) forming a first product cavity (115) and an upper container (120, 220) forming a second product cavity (125), the plug (300) having a base (310) fixedly secured to one of the lower container (110, 210) or upper container (120, 220) and presenting a communication passage (314) opening on both the first and second cavities, and a rotatable head (350) engaged with the other one of the upper container or lower container, the head being rotatable between a closed position where it covers the passage in the base thus preventing fluid communication between the first and second cavities and an open position where head is rotated away and at least partially uncovers the passage, thus allowing mixing of products contained the first and second cavities.