The present invention relates to a liquid cosmetic composition, preferably for making up and/or caring for the skin and/or the lips, comprising, in a physiologically acceptable medium, at least one fatty phase comprising: —at least one oil, which is preferably non-volatile, —at least hydrophobic silica aerogel particles, —at least one semi-crystalline polymer, —the said composition comprising less than 5% by weight of water relative to the total weight of the composition, and preferably being anhydrous.