Permanent birth control is accomplished through sterilization. Be sure you know and understand the different types of birth control available to you, the risks and benefits of each, and any side effects, so that you can make an informed choice. The base material is heavy and and offers added protection by blocking the opening into the cervix. The choice between a foam, jelly, cream, tablet, or suppository will generally depend on personal preference. Most studies reveal that the tablets and suppositories are not as effective as other forms of chemical barriers.
Foams are probably the most effective since they spread more evenly to coat the vagina and cervix.
Do not involve the hormones used in some other forms of birth control that can have side effects. Inexpensive and easily obtainable. Do not require a prescription. Do provide some degree of lubrication that is helpful for some couples during sexual intercourse. There is nothing to remove later.