Flash powder is a mild explosive which burns so quickly it does not cause more than minor burns, even in large quantities. However, it makes up for its lack of explosive force in visual effect. Used occasionally in warfare as a divisionary tactic, this powder truly shines as an aid for burglars. The blinding light it creates, even in small quantities, often provides enough of a distraction for the rogue to get away.  Anyone looking directly at it as it 'flashes' suffers a -5 penalty  to all spot checks for 5 rounds. Additionally, the flash  provides enough of a distraction to allow someone who was  under observation to make another Hide check.