With proper care and love your organic jewelry should give you a lifetime of enjoyment.
Your jewelry will not require significant maintenance. You can clean it by rubbing it with your fingers, or with a soft cloth. The jewelry can be maintained with occasional oiling, however your body produces natural oils which will be absorbed by the wood, so your plugs should only require occasional oiling.
Properly made jewelry can be exposed to water without damage. All Ignis Ferrumque wooden jewelry is moistened during the finishing process, to help prevent the grain from being raised when wet, however it is natural for jewelry to roughen somewhat overtime when worn in the shower, or even simply from the skins natural moisture. To refinish your jewelry you can clean it occasionally with 600 grit sand paper, and refinish it with a natural oil.
Questions or comments may be addressed to: LD@nullius.com