Device for packaging a product

A packaging device for a product, comprising a sleeve having an open end, a support for the product, movable in the sleeve between a retracted position, where the support is held by a retaining element, and a released position, an actuator able to neutralize the retaining element and thus cause movement of the support from the retracted position to the released position under influence of a return force, the retaining element being configured to re-arm itself automatically in the absence of actuation of the actuator, wherein the retaining element comprises a split ring and the actuator comprises a tab engaged in the split of the split ring.