A handle for an applicator of coloured liquid to skin comprises a removable needle module and a needle actuator. The needle module comprises a needle. The handle comprises a handle body having top and bottom portions. The top portion is engagable with the needle actuator and has a top opening for receiving a drive shaft of the needle actuator. The bottom portion is removably engagable with the needle module and has a bottom opening for receiving a needle shaft of the needle. A reciprocally movable interface sealingly engages an internal surface of the handle body. The interface separates the bottom opening from the top opening so as to prevent fluid communication from the bottom opening to the top opening, and is configured to abut the drive shaft and the needle shaft during use to allow the drive shaft to indirectly drive the needle shaft.
