Replying to Waxing and dead bases

So here is the deal, I got the new chronically last year, which have sintered bases, and I got them waxed right when I got them and that's it. I skied all last season without waxing them or anything then let them just sit all summer. After doing some research I noticed that my bases could be dead from like drying out. I looked at them and they show a little whiteness at the tip and tail but I thought it may have always been there. Is this a concern I should have, like are my bases pretty fucked up? Also, do I need to wax them before I ski Saturday?