After you are done brushing your teeth, rinse the handle and
bristles thoroughly under the tap to wash away any toothpaste
and debris. If by any chance the bristles bend during the
brushing process, you can straighten them back into place with
your fingers.
Bamboo is a natural material that keeps best when kept in a
dry area. Enclosed toothbrush cups that collect water are not
ideal. It is best to keep your toothbrush in an open-air
toothbrush holder or any other dry area.
Just to recap, wash it thoroughly, dry it thoroughly, store it in a
clean container or holder and you will have a higher success
rate at keeping your toothbrush in the best condition possible
for longer.