Patent ID: 8765103

Claim:
A cosmetic composition comprising an effect pigment based on a glass flake as a substrate with a coating, said coating comprising at least one layer of at least one high refractive material, said material having at least one of a refractive index of at least 1.8, and a semitransparent metal coating, wherein said glass flakes comprise the following composition: 67-73 wt.-% of silicon oxide; 4-7 wt.-% of aluminum oxide; 0.5-2.5 wt.-% of calcium oxide; 6-11 wt.-% of sodium oxide; 8.5-14 wt.-% of boron oxide; 0.5-2.5 wt.-% of titanium oxide; 0.1-1.5 wt.-% of zirconium oxide; and 1-4 wt.-% of at least one of potassium oxide, lithium oxide, and magnesium oxide, wherein the wt.-% is based on the weight of said glass flakes; wherein the difference between the refractive index of the glass flakes and the subsequently applied at least one layer of high refractive material is at least 0.6; wherein the at least one high refractive material is selected from the group consisting of metal chalcogenides, metal oxyhalides, metal nitrides, metal carbides, semitransparent metals and mixtures thereof; and wherein components used in producing said glass flakes meet at least one of the following criteria: (a) the silicon oxide is SiO 2 ; (b) the aluminum oxide is Al 2 O 3 ; (c) the calcium oxide CaO; (d) the sodium oxide is Na 2 O; (e) the boron oxide is B 2 O 3 ; (f) the titanium oxide is TiO 2 ; and (g) the zirconium oxide is ZrO 2 .