Safe – Developed by Dentists. Dries in less than 10 seconds. Easy to apply and lasts approximately 24 hours, depending on use. Will not harm teeth or existing dental work. Will not come off when drinking alcoholic beverages or eating food, Odorless and tasteless, Can be used on nails as well as teeth. These are great on their own but would be even better along with many of our other costumes and accessories available in our store!