Color your teeth bloody! Fast, easy, and frightening! *Safe-developed by Dentists. *Dries quickly-less than 10 seconds. *Easy to apply. *Lasts approximately 24 hours, depending on use. *Will not harm teeth or existing dental work. *Will not come off when drinking alcoholic beverages or food *Odorless and tasteless. *Can be used on nails as well as teeth! Show up to the party without blood on your fangs, apply later, and wow the crowd! Non-toxic and safe.