I don't know if you can get it or not anymore because I have had mine for several years but the product I use is called "Penwalt Erusticator". It states on the bottle that it removes rust from cotton to silk. I believe I purchased it at a hardware store. It works really well on fabric..just takes alittle bit and the rust comes right out...If you can't find this particular product I'm sure there are others out there that do the same thing...Good Luck...