Dyeing composition for human keratinous material comprising a fluorescent colouring agent and an insoluble polyorganosiloxane conditioning polymer, method and use

Composition characterized by comprising, in a cosmetically acceptable medium, at least one fluorescent dye in the range of soluble orange in said medium and at least one polymer insoluble conditioning said selected medium from polyorganosiloxanes not bearing amino groups not containing the composition, as [(4-dialkylamino) nil fenilete-2-] -1-alkylpyridinium in which the alkyl radical of the pyridinium nucleus represents a methyl or ethyl radical and the benzene nucleus represents a methyl radical, fluorescent agent, 2- and where counterion is a halide.