Fluster Buster shares a list of 37 ways you can use the common household product cornstarch. While it still can be used for cooking, it has numerous uses for cleaning, treating hair and skin, and more. We have two favorite examples on the list. One is how cornstarch can be used to make cards in a deck of cards not stick to each other. The other is how you can use it on knots to loosen them. This is great list. Who knew cornstarch could be helpful in such a variety of ways.