The present invention relates to a composition in the form of an oil-in-water emulsion, comprising, in a physiologically acceptable medium: a) at least one aqueous phase; and b) at least one oily phase comprising at least one apolar non-volatile hydrocarbon-based oil and at least one pasty apolar lipophilic hydrocarbon-based compound; and c) at least one hydrophilic gelling polysaccharide; and d) at least one mixture of emulsifying nonionic surfactants comprising (i) at least one fatty acid ester of polyol and (ii) at least one polyalkylene glycol ester. The present invention also relates to a cosmetic care process for moisturizing a human keratin material, in particular the skin, characterized in that it comprises the application to the surface of the said keratin material of a composition as defined previously.The present invention more particularly relates to a cosmetic care process for moisturizing a human keratin material, in particular the skin, on contact with water (for example under the shower or in the bath), characterized in that it comprises the application to the surface of the said human keratin material of a composition as defined previously, followed by rinsing with water and wiping.