Jacquard No Flow antifusant is used to inhibit the spreading of dyes on fabrics. It is particularly useful for drawing or writing with dye filled felt tip markers or fabric pens on silk fabrics. No Flow dries clear and rinses out with warm water. Easy to use, apply with a brush or sponge to the area you wish to write or paint. When dry, apply color using the technique of your choice. Made in the USA.