Dampen a microfiber cloth with 2 tbsp. of leather cleaner and degreaser. Rub the cleaner into the soiled area for 30 seconds. If the soiled area is larger than 12 square inches, rub the cleaner into each 12-square-inch area for 30 seconds.
Leave the cleanser and degreaser on the leather for two minutes.
Dampen a terry cloth towel with water and wipe down the surface of the leather chair to remove the cleanser. After each wipe, move to a clean spot on the towel so you don't spread the cleanser around.
Repeat the process if the towel continually comes up soiled when you are rinsing the leather chair.