Remove the cushion from the chair. Take the cover off the cushion and follow the cushion manufacturer’s cleaning instructions. Some cushions require the services of a dry cleaner, while others are machine washable.
Equip a vacuum with an upholstery brush attachment and vacuum the rattan, beginning at the top of the bowl-shaped seat working down to the base of the frame.
Brush stubborn dust and dirt out of crevices with an old toothbrush. If the dust and dirt remains, sharpen a wood towel with a utility knife to create a point. Drape a rag over the point. Hold the rag in place and carefully pick dust and dirt out of the recesses.
Mix 1/2 teaspoon of mild dish washing soap into 1/2 gallon of water. You can also mix an oil-based wood-cleaning soap with water according to wood cleaning soap manufacturer’s directions.
Submerge a rag into the cleaning solution and wring out as much excess soap and water as possible. Wet a second rag with water and wring out as much moisture as possible.
Wipe the rattan with the soap-dampened rag, concentrating on stuck-on dirt or stains. Immediately wipe the papasan chair with the water-dampened rag to remove the soapy residue and then dry the rattan surface with a rag.
Dip a toothbrush into the soapy water and shake off the excess cleaning water. Brush sticky stains out of the crevices. Immediately rub the crevices with a water-dampened toothbrush and dry the rattan with a rag.
Aim a fan at the rattan papasan chair to speed the drying process.
Move the rattan papasan chair outdoors and set it on a drop cloth.
Blend 1/3 cup of turpentine with 2/3 cup of boiled linseed oil in a small bucket.
Dip a narrow paintbrush into the mixture and apply it to the rattan surface. Continue to brush on the turpentine and boiled linseed oil until the rattan no longer absorbs the solution.
Wipe the rattan with a soft rag to remove the excess oily film. Let the rattan chair dry for three to four days.