Expiry date of glass activator

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2015 BMW 740Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Repair kit and glass activator are marked with a date (best before date).

The glass activator may only be used up to this date (if not already opened previously).
After opening, keep only for one week even if the expiry date has not yet been reached.