Mix 1 part perlite with 3 parts peat-based potting mix, such as African violet mix. Moisten the soil lightly. Remove the cyclamen bulb from its pot and clean off the old potting mix. Rinse the bulb thoroughly and allow it to dry.
Choose a pot the same size or slightly larger than the previous pot. Do not use a much larger pot since cyclamen blooms best when slightly root-bound. Clean the pot with a solution of 1 part chlorine bleach to 10 parts water. Allow the container to dry completely.
Place potting mix into the bottom of the pot. Place the bulb in the pot and add soil until the bulb is covered half-way. Tamp down the soil around the bulb, leaving the top half exposed. Water the plant thoroughly and place in a shady spot until new leaves emerge.