Ack! I just got Shower to Shower powder all over a navy blue knit shirt.?

I don't have time to wash it before my flight! How do I get the white streaks off??

Answers:
HA! Ha1 Haaaa! I just couln't resist.Sorry,put on another shirt and have a Safe flight.

Other answers:
get a racket or any wood paddle and beat it out!!
get a racket or any wood paddle and beat it out!!
place it in a basin full of cold soapy water let it soak don't rub . just swish it around and dump out the water . rinse . in cold water swish around again then dump out the water , don't wring press on the skirt till water is out . Lay flat and block it ..
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