Not sure why I never mentioned this before but I've been using this for years. This one particular can I've had over a decade and was just using it this morning and thought I'd pass this along. It works surprisingly well on blending finishes where you have a scratch and want to erase it. It will not raise a dent in the wood - that is still best done with a wet cloth and iron but it will blend the finish and it got rid of the one water mark I tried it on.
I checked online and it's still sold and not all that expensive - around 10/can from ACE. Amazon is $4 more. Considering how long it lasts that's a pretty good deal to me.
The new stick comes sealed in foil so it should last a long time unopened.