Devices for applying coloured liquid to skin

A handle for an applicator of a coloured liquid to skin, wherein the applicator comprises a needle and a needle actuator, the handle comprising:

• a tubular body having a top end and a bottom end and defining an inner channel extending from the top end towards the bottom end, the top end configured to engage the needle actuator or a handle connector for connecting the tubular body to the needle actuator, the bottom end configured to removably engage a needle module, the needle being housed and reciprocally movable in the needle module;
• an inner tubing extending inside the channel from the bottom end towards the top end within the tubular body, and having an open top;
• a seal sealing the open top of the inner tubing, the seal comprising a reciprocally movable interface, a top surface of the interface positioned to abut a drive shaft of the needle actuator and a bottom surface of the interface positioned to abut a needle shaft of the needle such that the drive shaft and the needle shaft interact through the interface,
• wherein when the needle module is disengaged from the bottom end of the tubular body of the handle, the seal remains within the tubular body and prevents fluid communication between the top end and the bottom end through the open top of the inner tubing.