How can I extend the life of my opened Lash Adhesive? For longjevity of your adhesive, product should be stored in a cool, dark and dry area, the life of this product is 12 months in un-opened condition. We recommend replacement of your adhesive within 6 weeks once opened. If you are unable to provide your adhesive with a safe storage place, we have the Lash Sublime Adhesive Storage Container. It is moisture proof with a vacuum seal. It has three compartments and a place for your silica gel pack. The perfect way to keep your adhesive fresher longer .