Abstract: The invention provides a dispersion of precursor titanium dioxide particles having an intensity mean peak value particle size, measured by DLS, or a number mean peak value particle size, measured by DLS, in the range from 0.2 to 2.0 ?m within a dispersing medium, wherein the particle size distribution of the titanium dioxide particles in dispersion is narrower than the particle size distribution of the precursor titanium dioxide particles. There is also provided the use of the dispersion of titanium dioxide particles to attenuate infrared radiation, particularly in a cosmetic composition, more particularly a cosmetic composition to provide protection against IR radiation, more particularly IRA radiation. There is also provided a personal care composition comprising the titanium dioxide dispersion.

Abstract: Titanium dioxide particles have high UVB absorption properties, an effective UVA efficacy and improved transparency. The titanium dioxide can be produced by calcining precursor titanium dioxide particles. The titanium dioxide particles can be used to form dispersions. The titanium dioxide particles and dispersions thereof can be used to produce sunscreen products which are suitable for use in a wide range of personal care applications.

Abstract: Titanium dioxide particles have high UVB absorption properties, an effective UVA efficacy and transparency. The titanium dioxide can be produced by calcining precursor titanium dioxide particles. The titanium dioxide particles can be used to form dispersions. The titanium dioxide particles and dispersions thereof can be used to produce sunscreen products which are suitable for use in a wide range of personal care applications.

Abstract: A particulate metal oxide has a metal oxide core and a coating layer containing an inorganic material and (i) a quaternary silane coupling agent, and/or (ii) a silane coupling agent and a hydrophobizing agent. Preferred materials are titanium dioxide core particles, an amino organosilane coupling agent and a fatty acid hydrophobizing agent. The particulate metal oxide is suitable for use in forming a dispersion, and the particles and dispersion can be used in an end-use sunscreen composition which is transparent, exhibits effective UV absorption properties, reduced photoactivity, and/or improved skin feel.

Abstract: A particulate titanium dioxide has a median volume particle diameter of greater than 70 nm. The titanium dioxide can be produced by calcining precursor particles. The titanium dioxide has enhanced UVA efficacy. The particulate titanium dioxide can be used to form dispersions. The particulate titanium dioxide or dispersions can be used to produce sunscreen products having a UV protection which is at least one third of the label SPF value.

Abstract: A particulate metal oxide has a metal oxide core and a coating layer containing an inorganic material and (i) a quaternary silane coupling agent, and/or (ii) a silane coupling agent and a hydrophobizing agent. Preferred materials are titanium dioxide core particles, an amino organosilane coupling agent and a fatty acid hydrophobizing agent. The particulate metal oxide is suitable for use in forming a dispersion, and the particles and dispersion can be used in an end-use sunscreen composition which is transparent, exhibits effective UV absorption properties, reduced photoactivity, and/or improved skin feel.

Abstract: A particulate titanium dioxide has a median volume particle diameter of greater than 70 nm. The titanium dioxide can be produced by calcining precursor particles. The titanium dioxide has enhanced UVA efficacy. The particulate titanium dioxide can be used to form dispersions. The particulate titanium dioxide or dispersions can be used to produce sunscreen products having a UV protection which is at least one third of the label SPF value.