Un-Du can only ship within the 48 states. It has to ship UPS so you MUST have a street address. PO boxes are not allowed for this item. Squeeze several drops over the top of a sticky label and use the spoon shaped scraper to peel back the label. Add a few more drops and rub to remove residue. Non-staining. Acid free and photo safe. Meets the State of California regulations. Takes slightly longer than original formula to evaporate.