iDye Fixative is a cationic resin used as a post treatment for dyed fabrics. For use with natural fibers only (cottons, linens, rayon, hemp, silk, and animal fibers) and ideal for items that will be frequently washed. This convenient dye fixative increases wash fastness, stops bleeding, and helps prevent back staining when working with textiles. It can also be used with other negatively charged dyes such as Procion MX, Concentrated Vinyl Sulphon, Remazol dyes, and commercially dyed fabrics that may bleed. Ensure that your textile designs are lasting and bleedproof with this convenient fixative!Details:Colorless3 fl. oz. (88 mL) jarTreats 9-18 lb. (4-8 kg) of fabricSafety Warning: utensils and pot used for this process should not be used for food