What kinds of deodorants are mutar on shabbat?
Which melacha might one violate if using stick deodorant?
Stick deodorant had an issue with Memachek. Some (but not all) Poskim permit spray deodorant. Roll-on deodorant would be no problem.
Yet there are some who are strict and use only odorless deodorant because of creating an aroma (Mo'lid) unless there is at least some remnants of the odor from before Shabbos.