A device for packaging, dispensing and using fluid contents having a liquid to pasty consistency, includes: a container having, at its front portion, a downstream opening, an element for conveying the contents including an upstream opening, an axially extended passage and a front downstream opening for dispensing the contents, the passage being elastically deformable and capable of being in an idle state having a maximum interior volume or in a compressed state having a smaller interior volume, an upstream valve element, a downstream valve element, a front wall, wherein is situated the front downstream dispenser opening, a movable annular actuating element associated with the passage of the conveying element and consisting of an elastically deformable annular side wall, which limits the passage laterally and externally. The side wall is positioned on the outside and includes an outer side wall of the device, which is at least partially accessible for actuating.