I used this recipe for a homemade fabric stiffener when I could not get my hands on a store bought one. It is a lot cheaper!
What you needWhite Glue (dries clear)
Bowl (any will do)
Place your white glue into the bowl.
Then add either equal amount or less water to your glue (this depends on how thick (stiff) you would like your stiffener to be.
Mix well and then place into the glue bottle and an extra bottle.
Store in a cool place.
Wash bowl and spoon with regular dish detergent.