Barrier methods are a type of contraception that prevent sperm from reaching an egg. They work by creating a physical barrier during sexual intercourse. Common examples include condoms, diaphragms, and cervical caps. These methods not only help prevent pregnancy but also reduce the risk of sexually transmitted infections (STIs). Using barrier methods requires proper application and consistency for effectiveness. Condoms are the most widely used barrier method and are available for both males and females. Other methods, like diaphragms, need to be fitted by a healthcare provider. Overall, barrier methods are a reliable option for those seeking to control reproduction and protect against STIs.