It is important to know how to clean your resin droppers because if they are not properly cleaned, they can become a breeding ground for bacteria. Resin droppers are usually made of glass or plastic and have a small opening at the top that allows you to insert a needle or syringe. To clean your resin droppers, you will need to use distilled water and rubbing alcohol. First, rinse the dropper with distilled water and then soak it in rubbing alcohol for at least 30 minutes. After soaking, rinse the dropper again with distilled water and allow it to air dry. You should clean your resin droppers after each use