So im noticing that with repeated uses that the top of the bowls arent that shiny vibrant look as when they were new. Is this something that people customarily place a wax or polish on, to keep them looking fresh, or just carry on?
Depends. If it's just a lack of luster, then obviously a bit of wax will help. If the rim has become darkened, but not charred, a little bit of saliva on a paper towel, or mild soap solution will take most of it off. Then wax if desired. If gentle cleaning does not remove the offending discoloration, more drastic measures may be required, but at the cost of the finish. I have removed char from some estates by using some very fine (400-600 grit) sandpaper. Place the sandpaper on a flat surface and place the bowl upside down on the paper, twist the bowl gently and check your work frequently. You'll lose some stain, but not all of it if you are careful. Then wax, or re-stain if you have some. Or don't worry about it at all!
I’ve done the spit thing and it cleans it up nicely. But I’ve definitely lost the shine. What polish/wax do you recommend?
Renaissance Wax is the easiest to use, but if you have access to a bench buffer, nothing beats carnuba.
Any votes for olive oil?
After I had my 50th birthday pipe made, I asked Paul (Larrysson pipes) what he used. He said Danish Oil.Maybe so. Carnauba wax is also vegetable. I figure in small amounts it would be ok. Perhaps mineral oil?