However: Pot-Life & Storage After adding 4012, there is no pot life. However, the alcohol in 4012 flashes water from paint, so if left open paint will thicken due to accelerated evaporation. Store paint in an air tight bottle after adding 4012. Keep in a cool dry box or cabinet away from sunlight and direct light. As bottles do allow for some exchange of air, evaporation may still occur over a prolonged storage period.