Abstract: The present invention relates to an anhydrous composition comprising, in a cosmetically acceptable medium: a) at least hydrophobic silica aerogel particles with a specific surface area per unit of mass (SM) ranging from 500 to 1500 m2/g, preferably from 600 to 1200 m2/g and better still from 600 to 800 m2/g, and a size expressed as the mean volume diameter (D[0.5]) ranging from 1 to 30 ?m; b) at least one solid fatty substance; c) at least one oil; the said composition having a hardness measured at 32° C. and at a humidity of 40% ranging from 15 kPa to 150 kPa and preferably ranging from 20 kPa to 100 kPa. The present invention also relates to a cosmetic process for treating and/or caring for human keratin materials, characterized in that it consists in applying to the surface of the keratin material at least one composition as defined previously.

Abstract: The present invention relates to an anhydrous composition comprising, in a cosmetically acceptable medium: a) at least hydrophobic silica aerogel particles with a specific surface area per unit of mass (SM) ranging from 500 to 1500 m2/g, preferably from 600 to 1200 m2/g and better still from 600 to 800 m2/g, and a size expressed as the mean volume diameter (D[0.5]) ranging from 1 to 30 ?m; b) at least one solid fatty substance; c) at least one oil; the said composition having a hardness measured at 32° C. and at a humidity of 40% ranging from 15 kPa to 150 kPa and preferably ranging from 20 kPa to 100 kPa. The present invention also relates to a cosmetic process for treating and/or caring for human keratin materials, characterized in that it consists in applying to the surface of the keratin material at least one composition as defined previously.