I have to say that this is by far the best nail strengthener I have ever used. I have the worst nails. Without this Miracle Cure on them they just peel and split and break straight away. I obviously have some issue internally but I take calcium, zinc etc and still my nails are pathetic. However, this Sally Hansen Miracle Cure has really saved my nail's life! They actually grow to a good feminine length now and I can paint them and decorate them without my nail peeling off and ruining the polish on top. This stuff really works. As long as you wear it and replace it regularly it will help you grow your nails and give them amazing strength. It is a high price but it is worth every cent! I swear by Sally Hansen nail strengtheners.