What is the shelf life of caramel made out of condensed milk in a can?

it can last a long time, not sure exactly but i heard on a show that it lasts forever,,,,

I don't know either, but I've seen that Nestle has put out cans of Dulce de Leche (already boiled condensed milk) recently.......I haven't tried it, but it might take away the need to worry about a can exploding in my kitchen and/or all over someone as it boils.