Well, the only thing that can be evaluated in case of a nail treatment is whether it's effective or not. I thought it'd help my brittle, splitting nails and prevent the damage the polish does to them and all I can say is that it does not. End of story.
Disclaimer: I bought the product myself for my personal use and I am not affiliated with any company. I am not paid to do this review and everything I said here is my genuine opinion.