Glowing Ink

Often extracted from phosphorescent insects, tiny marine plants, or subterranean fungi, glowing ink emits a faint but steady light (typically red or green) that allows you to read it in normal darkness—this includes darkness created by spells like darkness, but not the supernatural darkness created by deeper darkness. If there is glowing ink on an object, you have a +2 bonus on Perception checks to locate it. Mixing glowing ink with marker dye makes the dye glow in the dark until it fades.