I'm extremely sorry but this didn't work out for me. I used 3 tbsps. of cornflour because I wanted a stiffer starch for my sofa covers. When I used this yesterday, for sometime, the covers seemed to be starched. They looked really clean, really bright and white and stiff. However, after laying them out on the sofas and after a day has passed, today they don't seem to be starched at all. They look nice, no doubt, but just well ironed. Not Starched. I'm sorry about changing my review, but I thought it might help others who intended to try this.
I have to say I like it. I use it all the time. I keep the bottle in the fridge and shake it well just before I use it, and shake it every now and then while I'm going through my pile of ironing.
Sorry this just didn't work for me. I tried using warm water on the second go around but it still didn't work as well as the store bought stuff.