Removing dried baking powder+water stains?

Question

In light of festivites, there is this kids toy called Bomb Bags, which are tiny plastic sachets filled with baking powder and water. Upon mixing these materials by pressing the sachet, the sachet inflates and blows up at a very minute scale.

Being tall, I was the prime target of my younger cousins.

I have got this baking powder+water mixture on several articles of clothing. Is there a way to remove them, now that they have dried on my clothing? I am now trying to soak them in hot water.

Thank you in advance.

Answer 1

First try some white vinegar and then rinse it out. If that doesn't work
try a presoak like Shout or Spray and Wash and launder as usual.