The basics Bluebird FX Stipple Ink Pack. 4 15ml bottles. The benefits BluebirdFX famous concentrated ink formula, for airbrush or direct application. All can be used on silicon and latex.  The uses A range of soft colours to break-down any skintone. Great for subtle prosthetic and character work. Colors: Long Black, Mushroom, True Rose, Tea Stain The bottom line Great for refilling palettes or simply packing-down to travel light.