The present invention relates to the combination of pullulan or a derivative thereof with a polysaccharide chosen from hyaluronic acid, a salt or derivative thereof, alginic acid, a salt or derivative thereof and a mixture of these polysaccharides. It also relates to a mixture of cosmetic or pharmaceutical ingredients, a cosmetic or pharmaceutical composition and a detergent or hygiene product comprising this combination. It further relates to the use of this combination for reducing the insensible water losses and/or for increasing the water content of the skin and/or mucous membranes and/or for increasing and/or prolonging the content of cosmetic and/or pharmaceutical active ingredients in the skin and/or the mucous membranes and/or maintaining it over time, the use of this cosmetic composition for maintaining or improving the state of hydration of the skin, and/or for preventing or slowing down the appearance of the signs of cutaneous and/or mucosal dryness, and/or for treating cutaneous dryness conditions, and/or for preventing or reducing the appearance of wrinkles linked to cutaneous dryness, and/or for improving the comfort of dry skin and/or mucous membranes, and/or for treating skin and/or mucous membranes having an appearance that is rough to look at and/or to the touch, and also the use of the pharmaceutical composition in the treatment and/or the prevention of fissures and/or scurf or pityriasis alba and/or cracks and/or atopic dermatitis and/or ichthyosis and/or conditions of dryness of the skin or mucous membrane that accompany cutaneous pathologies.La présente invention concerne l'association du pullulan ou un de ses dérivés avec un polysaccharide choisi parmi l'acide hyaluronique, un de ses sels ou dérivés, l'acide alginique, un de ses sels ou dérivés et un mélange de ces polysaccharides. Elle concerne en outre un mélange d'ingrédients cosmétiques ou pharmaceutiques, une composition cosmétique ou pharmaceutique et un produit détergent ou d'hygiène co
