Remove your earrings when:
Applying lotion, perfume, hairspray or other beauty products
Showering or swimming
Do not allow your resin jewelry to become extremely cold or hot. For example, don't leave them in a car on a hot day. If it does become extremely hot, it will become malleable - just allow to cool to room temperature before handling excessively.
Do not store in direct sun.
Resin can be cleaned with a mild soap and water.
The best way to restore resin's shine is to use a plastic polish like Novus Plastic Polish. Use the #2 to renew the finish, and the #1 to add a final shine - and then you can periodically use the #1 to keep it in great condition.