Tube production is coupled with a low-density polyethylene (LDPE) desiccant closure that has been specially designed to prevent moisture from penetrating inside the packaging. A silica gel filling integrated into the tube cap prevents contents from interacting with moisture in the air and prematurely dissolving, losing their color or effectiveness, or going off.

The closure also features a security lock and manipulation guarantee, with an integrated ring designed to break visibly in the event of an unauthorized first opening.