Dust regularly with a dry soft cloth, a soft brush, or vacuuming the piece with the brush attachment of a vacuum cleaner.
Use a soft bristled toothbrush for those hard to reach places.

Periodically wipe down with a soft damp cloth.
To restore dry, cracked, or split rattan, apply boiled linseed oil with a soft cloth or soft bristled brush. When the furniture won't absorb any more oil, wipe it clean with a soft cloth. Allow it to dry or harden before using again.
If used outside in an undercovered area and it happens to become wet, leave to dry and the furniture will not be affected. Over an extended period of time outside, where possible, natural rattan furniture should be stored in dry conditions as it is organic material. Prolonged dampness can lead to mold.