to achieve proper fixation usually the textile substrate is heated prior to application of the flame retardant composition to achieve improved fixation to the substrate by ambient temperature we mean temperatures that exist in the textile processing and finishing areas of a textile finishing mill which may be above or below normal room temperatures of around 70 u00b0 f the term flame retardant composition as used herein and in the appended claims means the powder composition applied to the textile substrate containing as the primary active ingredient a powdered water insoluble flame retardant capable by itself of attaching and durably fixing to a textile substrate this composition may also include a bonding agent such as an acrylic resin to facilitate and enhance bonding as described and or another or second flame retardant in powder form by itself incapable of fusing and attaching to the textile substrate yet together with the first powdered flame retardant capable of enhancing the textile substrate 39 s flame resistance one suitable flame retardant meeting these criteria is hexabromocyclododecane a bromine containing flame retardant available from several sources which has a melting point of about 360 u00b0 f the product is normally applied as a dispersion dried and heated above 360 u00b0 f to melt and to fuse the hexabromocyclododecane to the surface of the textile substrate fixation has been found to be excellent even after 50 consecutive hot water launderings the dispersing agents used to prepare aqueous dispersions of the hexabromocyclododecane sometimes adversely effect dyestuffs.