The present invention relates to novel composite particles based on mineral UV- screening agent and perlite. The present invention also relates to a composition comprising, in a cosmetically acceptable medium, at least composite particles for screening out UV radiation, based on mineral UV-screening agent and perlite. The invention also relates to a cosmetic process for caring for and/or making up human keratin materials, especially bodily or facial skin or the hair, comprising at least the application, to the surface of the keratin material, of at least one composition as defined previously. The invention also relates to a non-therapeutic cosmetic process for limiting the darkening of the skin and/or improving the colour and/or uniformity of the complexion, comprising the application, to the surface of the keratin material, of at least one composition as defined previously. The invention also relates to a non-therapeutic cosmetic process for preventing and/or treating the signs of ageing of a keratin material, comprising the application, to the surface of the keratin material, of at least one composition as defined previously.La présente invention concerne de nouvelles particules composites à base d'un agent anti-UV minéral et de perlite. La présente invention concerne aussi une composition comprenant, dans un milieu acceptable d'un point de vue cosmétique, au moins des particules composites pour faire écran au rayonnement UV, à base d'un agent anti-UV minéral et de perlite. L'invention concerne aussi un procédé cosmétique pour le soin et/ou le maquillage de matières kératiniques humaines, en particulier la peau du corps ou du visage ou les cheveux, comprenant au moins l'application, sur la surface de la matière kératinique, d'au moins une composition telle que définie auparavant. L'invention concerne aussi un procédé cosmétique non thérapeutique pour limiter le brunissement de la peau et/ou améliorer la couleur et/ou l'uniformité du teint, comprenant l'application
