I had no idea this even had an expiration date, I just reopened the box and it says 06/15 so I looked on skinacea.com and it says it's still usable as long as it's unopened and hasn't expired more than a year, I actually just checked the set I use and they expired in January, still work as my face is still very clear :)
I honestly cannot tell you when these were purchased, my brother bought these before he deployed, they had to have been bought within the past 2 yrs as they just expired in May, but are still good to use til next May.
People fail to understand that Exp dates on these type items are merely a governmental formality. The product is not going to mysteriously stop working on a random date pulled from thin air. The only thing exp dates matter for on products like this are telling you when things are YEARS out of date and "may" be slightly degraded if stored somewhat responsibly.