I bought this glue the end of May 2014 and was satisfied with the collage. 8 months after, although the glue was properly recapped and stored, you can not use it, it was completely dry in the tube. Not vindictive, I order a new mid February 2015. Surprise, the adhesive is already dry, you can not use it, so I turned and sought reimbursement. On the packaging, it is noted that 12 months when stored in a package UNOPENED. So yes, one can imagine that after opening, it takes a few weeks, it is important to know! As for the one I received in February 2015, there was "2003" printed on the product. If this is the year of production, no wonder it is no longer operational. I think this type of product can not stand to be stored long months in warehouses ...