What it is: The coloring matter in paint
Pigment is the raw coloring material suspended in paint — tiny particles (natural or synthetic) that give paint its color. Pigment is distinct from the binder (which holds it together) and the solvent (which keeps it liquid until it dries).
Why it matters for airbrushing:
- Pigment load affects paint behavior. High pigment load = more opaque, but can cause clogging at fine nozzle sizes. Lower pigment load = more transparent, flows more easily.
- Pigment particle size matters. Coarse-ground pigments (common in craft paints) clog fine nozzles. Quality airbrush paints use ultra-fine ground pigments specifically for airbrush use.
- Pigment settling: Paints that have been sitting will have settled pigment. Always shake or stir thoroughly before use, and stir again mid-session for long painting periods.