Micro-pulverized pigments are suspended in a professional quality shellac solution. This opaque white drawing ink is inter-mixable with other Higgins Inks to create custom colors. Can be diluted with distilled water. Compatible with dip pens, brushes, and airbrushes, with good adhesion to most surfaces. Close cap tightly after use. Do not mix with acids, or use as tattoo ink. Not launderproof. Clean tools with tap water immediately after use or use Higgins Pen Cleaner for dried ink. Shake well before use. Made in the USA