My daugter had teething pain, and this reduced the pain a lot. The necklace looks great on her neck. She is permanantly wearing it now, as some more teeth are growing now. There is advantages and disadvantages of having the magnetic clasp. My daughter puls it easyly and removes the neckles, so I have tied it with a cotton wool. On the other hand, it is safe that it comes out easyly form the neck when the necklace gets stuck somewhere while playing or going for swimming, so it doesn't heart the child's neck.