I have found Sta-Flo liquid starch in the detergent section of grocery store sold in a 2 qt light blue bottle. Contents--water, corn starch, borax, processing aids, preservative, ironing aid, and perfume. No color added
Directions on label given to mix the how much "starch" you desire. I usually use a 1:1 ratio
I mix as desired and put in a spray bottle. Once in a while the spray nozzle will dry up if I haven't used it in a while, but a quick soak of the sprayer in the sink remedies that problem.
My sister, a nurse, used this years ago to starch her cap--remember when nurses wore caps! :lol:
Hope you can find it and give it a try. A lot less expensive and don't have to mess with a pressurized can!