Hormonal patches are small adhesive patches that release hormones into the bloodstream through the skin. They are commonly used for birth control, delivering hormones like estrogen and progestin to prevent ovulation and regulate menstrual cycles. These patches are typically worn on the skin for a week at a time and are replaced weekly. In addition to contraception, hormonal patches can also be used for hormone replacement therapy, helping to alleviate symptoms of menopause such as hot flashes and mood swings. They are a convenient alternative to daily pills, providing a steady release of hormones without the need for frequent dosing.