Assembly for packaging two cosmetic products

Assembly for packaging two products separately and for dispensing a mixture of said products upon first use, said assembly comprising:

• a lower container delimiting a first internal volume containing a first product;
• an upper container delimiting a second internal volume containing a second product, said containers being rotatable with respect to one another without moving axially with respect to one another;
• a temporary closure member configured to close an open end of the lower container before first use, and comprising:
• an internal cylindrical skirt surrounding said open end;
• and
• a closing element connected to said internal cylindrical skirt, said skirt being provided, on its internal surface, with an internal thread that cooperates with an external thread provided on the lower container;
• and
• an assembly collar snap-fastened onto the lower container and onto the upper container, said collar rotating as one with the upper container and being rotatable with respect to the lower container,
• wherein, before first use, the temporary closure member is in scaling contact with the assembly collar, said temporary closure member further comprising first rotation prevention means cooperating with second rotation prevention means provided on the assembly collar so as to prevent the relative rotation of the temporary closure member and of the assembly collar and the temporary closure member not having means for axial retention with the containers and the collar, such that when the lower container is rotated with respect to the upper container, the temporary closure member is moved axially until it is located in the internal volume of the upper container.