3M Protective Chemical FC-226 is a non-fluorochemical product that imparts durable water absorbency (wicking) and stain release properties to 100% polyester fabrics or yarns.The water absorbency (wicking) and stain release properties can be seen on other synthetics such as nylon and acrylic, however, the advantages are not as dramatic as on 100% polyester. FC 226 will, in some cases, marginally improve fabric softness and may enhance dye bath lubrication. When fabrics are properly treated with FC 226, most stains are generally removed during one home laundering. For stubborn stains, additional washes may be required for complete stain removal.