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Nacreous pigments having a yellow powder color and an improved light-fastness comprise a mica platelet coated with titanium dioxide and on the titanium dioxide layer, a thin layer of calcined chromium oxide and/or chromium phosphate as a protective layer. The pigments are produced by coating mica pl

Nacreous pigments having a yellow powder color and an improved light-fastness comprise a mica platelet coated with titanium dioxide and on the titanium dioxide layer, a thin layer of calcined chromium oxide and/or chromium phosphate as a protective layer. The pigments are produced by coating mica platelets coated with metal oxides and/or hydroxides, with a thin layer of a sparingly soluble chromium(III) compound and calcining at about 500°-1000°C.

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A nacreous pigment having a yellow powder color and an improved light-fastness comprising a mica platelet coated with a plurality of metal oxide layers, wherein the metal oxide layers comprise the sequence rutile/SnO2/rutile and the outermost layer is rutile, and on the outermost rutile layer a thin

A nacreous pigment having a yellow powder color and an improved light-fastness comprising a mica platelet coated with a plurality of metal oxide layers, wherein the metal oxide layers comprise the sequence rutile/SnO2/rutile and the outermost layer is rutile, and on the outermost rutile layer a thin layer of calcined chromium oxide as a protective layer, and in the chromium oxide layer a phosphate content of up to the stoichiometric amount based on the chromium content. A lustrous composition of claim 6, wherein the base composition is a cosmetic formulation A process for preparing a yellow nacreous pigment having improved light-fastness and comprising a mica platelet coated with metal oxides, comprising (a) coating a mica platelet successively with at least three layers of titanium hydroxide, tin hydroxide and titanium hydroxide, the outermost layer being a titanium hydroxide layer, and optionally washing, drying and calcining the pigment, (b) coating this pigment with a thin layer of a sparingly soluble chromium (III) compound, which contains phosphate ions of up to the stoichiometric amount based on the chromium content, and then (c) calcining it at a temperature of about 500°to 1000°C.