Blot fresh oil or grease from the stain with a soft cloth. Press gently so as not to push it further into the chair.
Sprinkle cornstarch or baby powder on the stain. Work it gently into the fabric with your fingers and add more to leave a thin layer covering the stain.
Leave the powder on the stain for at least an hour.
Brush away the cornstarch or baby powder with a soft bristle brush or incorporate the help of the brush attachment of your vacuum cleaner.
Dampen a cloth with warm soapy water and expel all of the excess moisture from it with your hands before using it to wipe the area clean.
Wipe the area with the cloth. Do not over saturate the area.
Allow the area to air dry before brushing it in the direction of the pile with a soft-bristled brush.
Repeat the process until the stain is gone.