Abstract: A thick pearl luster dispersion comprising the following four components (A), (B), (C) and (D);(A) 15-40 wt % of a fatty acid glycol ester,(B) 0.3-12.5 wt % of an alkylsulfate or polyoxyalkylene alkylsulfate,(C) 3-25 wt % of a fatty acid dialkanolamide,(D) 45-85 wt % of water,the mixing ratios of the (B), (C) and (D) components lying within the area surrounded by straight lines obtained by connecting the determined four points on the triangular cordinate of the three-component system.A thick pearl luster dispersion according to the invention is uniform in crystalline form, low in viscosity and beautiful in appearance with excellent high and low temperature stability.