Warning: WARNING: This product contains progesterone, a chemical known to the State of California to cause cancer. Consult with your physician before using this product. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles. Visit www.P65Warnings.ca.gov for more information.