I bought 4 bottles of KMF cool mint moisture shave on Amazon because the price for just one with shipping was ridiculous and I can't find it anywhere near me. Will the 3 bottles stay good long enough for me to have the one I've started in a rotation with my other stuff, or should I 3017 it so that the other bottles don't go bad by the time I get to them? I have a 10-soap and 5-cream rotation, so it would take very long to use even just the first bottle up, and with KMF being mostly natural ingredients I wasn't sure of the shelf life.