After a deep clean with ME, I use a shellac-base sealer, either sanding sealer, or shellac reduced 2:1 with denatured alcohol. Wipe it on quickly with a lint-free rag, then let it dry for an hour. Sand lightly with 600 to 1000 sand paper to level any irregularities. Clean with a tack rag, and wipe on a final light coat. Smooth with 1000, then 2500 paper, and finish with a piece of brown paper from a shopping bag. You can also use the fine cushioned abrasives if you can find some. My preference is 1800 then 4000 then 8000 grit. Weekly alcohol cleanings gets me about a year before a reseal, but I rotate 2 different shafts. Periodic polishing with the 4000 & 8000 grit, or the brown paper keeps my shafts smooth and slick without any waxes or additives. Hope this helps.
Bill