The contraceptive patch is a hormonal method of birth control. It is a small patch a woman can wear on her skin to keep her from getting pregnant. It sticks to the skin like a Band-Aid. The patch contains both estrogen and progestin. The hormones go slowly into the woman's body through her skin.
Each patch works for only 1 week. You wear one patch each week for three weeks. During the fourth week, you wear no patch at all. This is when you will get your period.