Given that your journey will take you away from your typical city centre, it is recommended that you have packed plenty of hygiene products to last your entire excursion.
The main stops on your journey will be limited to several smaller villages that are very unlikely to have the specific toothpaste or deodorant you are looking for. As a worst-case scenario, you can try borrowing from those around you, but given that everyone is likely to be in the same situation as you, this may not be particularly fruitful.