Booster Harris & Menuk Product Search Select Category Booster/extender Cotton: CO Polyester: PES Polyamide: PA Viscose: VI Spandex, Lycra: EL ZDHC MRSL Bluesign Oeko Tex GOTS Product Name Description Substrate Ionic Character Brooksol XC 870 Isocyanate based crosslinker for durability All SubstratesNon-ionic Brooksol XC 333 Resin based crosslinker for durability All SubstratesAnionic