If necessary, lightly damp paper towel. Then, rub with a dry cloth, like old t shirt material. This assumes the cuemaker put a sanding sealer on it in the first place, and you have not sanded it.
Most of all though, build up your natural hand oils on the shaft, which seals it and smooths it over time.
Do your best to avoid voodoo like Magic Eraser and crap like that. They're not made for wood. Your hands are best for wood.
All the best,
I agree with this with one note: I do cut up a magic eraser (get about half dozen strips) and use that to clean my ferule when it gets too gunked up.
There was a post a while back, by TATE, I think:
1. Wet a Magic Eraser, squeeze out excess water, rub shaft until clean.
2. Let shaft dry (about 15 minutes). Water will raise grain.
3. Use 1500-2000 grit sand paper (dry) to remove grain.
4. Use paper shopping bag or baking "parchment paper" to burnish. Follow with soft cloth or paper towel.
Works great for me!
I’ve given this piece of advice 1000 times before but here it is one more time. When you go pee and then wash your hands afterwards keep the damp towel after you dry your hands. Also get a dry piece of paper towel. Wipe the shaft with the damp one and then burnish with the dry one. Let the chalk and skin oils seal the grain. Works better than any store bought sealer.