Flashcotton looks like ordinary white cotton. When a flame, cigarette, spark, or other fire source touches the cotton, it violently incinerates into a flash and leaves absolutely no visible residue. Note that we cannot sell this item to minors. By ordering you are making the promise that the buyer and user is a legal adult. Flash products such as this are flammable and the Illusion Warehouse makes no promise regarding the safe use of this product. Buyer beware. Use with prudence and caution. Also it is AGAINST FEDERAL LAW for us to ship this item through the US Mail. It must be picked-up at our store. 525RUMHAZ_FLASHCOTT