I honestly don't think Niagra, June Tailor's "Starch Savvy", and Best Press contain starch anymore. When Best Press first came out, the MSDS on it said it was a starch product, but I believe now it says "polymer", which is also what the June Taylor product says. And Niagra quit making my favorite starch in the non-aerosol spray bottle, they've come out with an "ironing spray" instead. 😒 It has a scale on the bottle going from soft to crisp and rates this product as soft, which as a quilter I find very disappointing. We need crisp! I wrote them an email telling them so and asked them to come out with a product stiff enough for quilters. They never responded. So I'm going to try making my own spray with Sta-Flo.