This Video explain what is, how works…..
The birth control patch, is a thin, beige, plastic patch that sticks to the skin. The birth control patch releases hormones that are absorbed into the skin to prevent pregnancy. A new patch is placed on the skin once a week for three weeks in a row, followed by a patch free week. The birth control patch is very effective at preventing pregnancy when used correctly.
This form of contraception does not prevent against STDs (sexually transmitted diseases), so please use a condom in addition to the birth control patch if this is a concern for you and your partner.