PURPOSE: To obtain a fluorescent organosilicon compound enabling to determine the extensiveness of deposition of the fluorescent organosilicon compound on hair by reacting an aminofunctional organopolysiloxane with a fluorescent labeling reagent. CONSTITUTION: This fluorescent organosilicon compound is obtained by reacting (A) an aminofunctional organopolysiloxane, e.g. a compound of the formula [X is NHR' (R' is H, a 1-6C alkyl); R is a 1-6C alkyl, an alicyclic group, a halogenated hydrocarbon group, a halogenated aromatic group; (a) is 0-3; (b) is 0-2; (a)+(b)=<4] with (B) a fluorescent labeling agent, e.g. 4- dimethylaminoazobenzene-4'-sulfonyl chloride or 1-dimethylaminonaphthalene-5- sulfonamide-ethyltrimethylammonium perhydrochloride. Both the compounds are bound to each other by means of a sulfonamide linkage. The fluorescent organosilicon compound can be applied to hair and subsequently exposed to ultraviolet light to visibly determine the extensiveness of deposition of the fluorescent organosilicon compound on the hair.
FLUORESCENT ORGANOSILICON COMPOUND AND PROCESS FOR TREATMENT OF HAIR