This Review Title is A little bit spiky'er of the teeth would be MUCH better. and the content is: They DO glow in the dark after a prolonged period of time subjected to light. They are flexible but don't hold my hair that well.  A little bit spiky'er of the teeth would be MUCH better..There are other information for this review, one is This reviewer did purchase it and the other is 0 people think this review is helpful.