Later, wet-sand the beads through a range of grits, starting with 320 or 400 (depending on how smooth they were before curing) and finishing with 800 or 1000 (or higher, if you prefer). Buff to a high sheen on a muslin wheel or with a denim rag. An electric buffing wheel is preferred, for the highest shine.
No finish is required, but if you wish to do so, you may apply a couple coats of polymer clay-friendly finish. (This step will give you a glassier finish if you don’t have a buffing wheel and aren’t able to achieve a high sheen through buffing alone.)