Disclosed are a hair colouring device and method of its use. The device includes a top housing, a bottom housing movably engaged to the top housing at distal ends using an engagement mechanism that enables the device to alternate between a closed position and an open position, a first cartridge carrier For receiving a first colourant-filled cartridge, the first cartridge carrier being removably disposed within an opening provided on the top housing, a second cartridge carrier for receiving a second colourant-filled cartridge, the second cartridge carrier being removably disposed within an opening provided on the bottom housing, a pair of applicator lips, each of the applicator tips being disposed at a proximal end of the first cartridge carrier and the second cartridge carrier. The device allows accurate, non-messy and even application of the hair colouring composition to the selected one or more strands of hair more quickly and effectively.
