Stealth Ink Cali Marker

The Stealth Ink Cali Marker is a 4mm chisel-tip marker filled with a colourless, water-like ink that stays invisible until it reacts with UV light. It appears almost instantly in direct sunshine and more slowly in shaded spots, settling into a shade from dark brown to black. Very permanent on absorbent surfaces and almost impossible to buff, it’s a distinctive choice for a slower, stealthier reveal.