The present invention relates to an anhydrous composition comprising:1) at least particles releasing a beneficial agent comprising a core containing at least one beneficial agent and an envelope surrounding the core said envelope comprising at least one hydrophobically modified polysaccharide and at least one water-soluble carbohydrate and/or water-soluble polyolsaid particles simultaneously having a poured powder density ranging from 300.0 g/l to 600.0 g/l and an absolute density of greater than 1.0 and2) at least propellant.The invention also relates to a cosmetic process for caring for and/or for the hygiene of and/or for conditioning and/or for fragrancing and/or for making up a keratin material, which consists in applying to said keratin material a composition as defined previously.The invention additionally relates to a cosmetic process for treating body odor and optionally human perspiration, which consists in applying to a keratin material a composition as defined previously comprising at least one deodorant active agent and/or antiperspirant active agent in free form and/or in encapsulated form.
