You can make it yourself from the common dry cornstarch found in the baking sections: Yes, you can starch clothing with regular corn starch. In a large bowl or pot, stir 1/2 cup of corn starch into 1 cup of cold water. read more
What You’ll Need: 1 Tbs. cornstarch. 1/4 cup cold water. 3 3/4 cup tap water. 2-3 drops of fragrant essential oil or lemon juice (optional) Mix It Up: Bring 3 3/4 cup tap water to a rolling boil. While waiting for water to boil, mix the tablespoon of cornstarch into cold water. Stir constantly until cornstarch is completely dissolved. read more