Sorry if this is a silly question, but does it have a point where it no longer works well? I would think not, but just making sure. I have some Carnauba red I got from White Label maybe 10 years ago. I bought a bunch because it was a custom color. I have enough to last a lifetime if it doesn't go bad (I am 35).
As an aside, the stuff works great as a pan lube. I heat the lube and pour in the pan with preheated bullets. When it solidifies, but still slightly warm, I grab the nose with a pair of needle nosed pliers and pop them right out! Very simple, and hardly any extra cost. Here is what the first attempt looked like. (I found out later that I should have installed the gas check first to create another groove)