Condoms are not harmful to your body if you use them too much. As long as the body is not allergic to condoms, you can; if you are allergic to condoms, itching, redness and swelling of the genitals can occur during or after sex, so you should avoid using condoms and switch to other contraceptive methods. Condoms are thin, generally do not affect the sexual experience, condoms have a layer of grease, can reduce the friction of sex, can also effectively prevent AIDS, syphilis, gonorrhea and other sexually transmitted diseases, is a better contraceptive tool.