The invention relates to pearlescent pigments comprising a platelet-shaped substrate, a metal oxide coating comprising a metal oxide layer having a refractive index of greater than 1.8 and a protective layer, wherein the protective layer comprises a metal oxide/hydroxide layer and optionally boroxide, applied to which is an organic aftercoat of an acrylic copolymer, to a method for producing said pigments and the use thereof. The outer layer provides a very good photo-stabilisation of the TiO2 coated platelet-shaped substrates, such as mica, combined with a good water resistance and an anti-yellowing performance.