A device (10; 110) for dispensing a fluid composition, characterized in that it comprises: - a container containing a heterogeneous mixture; - a delivery element positioned in the container, to convert the heterogeneous mixture into the fluid composition; - a member for dispensing the fluid composition outside the device (10; 110); - the delivery element comprising: • a fluid guide conduit, comprising an upstream opening designed to open into the container, a central passage, and a downstream opening designed to be connected to the member for dispensing the fluid composition outside the container, the guide conduit defining a fluid flow axis (A-A') through the central passage between the upstream opening and the downstream opening, the dispensing member being connected to the downstream opening; • a filtration member, mounted in the guide conduit, the filtration member being configured so that the heterogeneous mixture inserted into the guide conduit through the upstream opening passes through the filtration member; the filtration member comprising at least one openwork filtration wall delimiting a plurality of filtration openings, the filtration wall forming a non-zero angle with a perpendicular to the flow axis (A-A'); characterized in that: the guide conduit has an upstream restrictor, positioned between the upstream opening and the filtration member, the guide conduit having a downstream segment with a transverse expanse, considered relative to the flow axis (A-A'), larger than the transverse expanse of the upstream restriction; the heterogeneous mixture comprising particles in suspension, the filtration openings having a transverse expanse smaller than the mean diameter of the particles in suspension, advantageously smaller than one third of the mean diameter of the particles in suspension; and the particles in suspension being formed by beads comprising a core and a gelled envelope, the diameter of the beads advantageously being larger than 1 mm. - a container containing a heterogeneous mixture; - a delivery element positioned in the container, to convert the heterogeneous mixture into the fluid composition; - a member for dispensing the fluid composition outside the device (10; 110); - the delivery element comprising: • a fluid guide conduit, comprising an upstream opening designed to open into the container, a central passage, and a downstream opening designed to be connected to the member for dispensing the fluid composition outside the container, the guide conduit defining a fluid flow axis (A-A') through the central passage between the upstream opening and the downstream opening, the dispensing member being connected to the downstream opening; • a filtration member, mounted in the guide conduit, the filtration member being configured so that the heterogeneous mixture inserted into the guide conduit through the upstream opening passes through the filtration member; • a fluid guide conduit, comprising an upstream opening designed to open into the container, a central passage, and a downstream opening designed to be connected to the member for dispensing the fluid composition outside the container, the guide conduit defining a fluid flow axis (A-A') through the central passage between the upstream opening and the downstream opening, the dispensing member being connected to the downstream opening; • a filtration member, mounted in the guide conduit, the filtration member being configured so that the heterogeneous mixture inserted into the guide conduit through the upstream opening passes through the filtration member; the guide conduit has an upstream restrictor, positioned between the upstream opening and the filtration member, the guide conduit having a downstream segment with a transverse expanse, considered relative to the flow axis (A-A'), larger than the transverse expanse of the upstream restriction; the heterogeneous mixture comprising particles in suspension, the filtration openings having a transverse expanse smaller than the mean diameter of the particles in suspension, advantageously smaller than one third of the mean diameter of the particles in suspension; and the particles in suspension being formed by beads comprising a core and a gelled envelope, the diameter of the beads advantageously being larger than 1 mm.