Abstract: The present invention relates to a method for packaging a product (10), in particular a cosmetic product, in a support (20) of flat overall shape through which a cavity (30) passes, which cavity opens onto a first face (21) of the support (20) via a first opening (31) and onto a second face (22) of the support (20), on the opposite side from the first, via a second opening (32), the said method consisting in:

Abstract: A box includes a front panel and a rear panel connected by side panels. The box further includes at least one opening and an associated closing system. The box may optionally contain an object whose cross-section is such that it is substantially in contact with at least one of the panels adjacent the opening. The closing system may include a lid part formed, for example, by folding a continuation of one of the panels. A flap may be formed from a continuation of the lid part, thereby allowing the flap to be positioned between the object and the front panel when the lid part is in a closed position. The flap may be provided with a free edge having outline configured to assist interposition of the flap between the object and the front panel. The box may be used for packaging a case such as a lipstick case.