As Nagelhärter ok, but .....

..... Because you can now think about whether you will evaluate the hardness of nails. Since then 5 star would be due. However, my fingers have every much pain shortly after application 2-3 hours. The nail fungus is not failed as some previous speakers. So what good is a nail hardener, which makes the nails broken?
Therefore, 3 points, because perhaps not everyone has these problems.