It is recommended that the diaphragm never be left in for more than 24 hours. It must be left in place at least eight hours after intercourse. It will need to be refitted after one has a baby, abortion, miscarriage, or a weight gain or loss of ten pounds or more. And for protection against sexually transmitted diseases, the sexual partner should also wear a condom. Wash and thoroughly dry your spermicide applicator and diaphragm after each use.
Plain soap is best.
Do not use talcum powder on your diaphragm or in the case. An individual should routinely check a diaphragm for holes or wear in the rubber. To do this, you can hold it up to the light and gently stretch the rubber with your fingers while looking for holes or tears. Contact with oil-based products such as petroleum jelly, mineral oil, hand lotion and vegetable oils, as well as some vaginal yeast and hormone creams can deteriorate a diaphragm. Diaphragms should be replaced about every two years.