Abstract: The invention relates to a thermoregulated device for modifying the consistency of a starting composition that comprises a preparation at least partially mixed with a liquid. For this purpose, the device is configured to accommodate a reservoir (3; 203; 303; 403; 503; 603; 703) containing the starting composition and possessing two opposing faces, at least one of which comprises a flexible section, the device comprising a thermoregulated element (2; 202; 302; 402) having a predefined contact surface arranged to come into contact with one of the opposing faces of the reservoir (3; 203; 303; 403; 503), as well as stirring means for mixing the composition in the reservoir (3; 203; 303; 403).