The best nail hardener against breaking nails

I've always suffered from fast breaking nails. This is very annoying, especially because I work at a drugstore and so I have to open and carry lots of boxes. At the end of the day, I had almost no nails left. I tried some other nail hardeners from other brands, but these didn't show much difference. My mom pointed me to this brand and said it worked well for her too. I use this Nail Hardener once a week to make my nails stronger and I hardly suffer from breaking nails anymore. It is a transparent, shiny layer that makes your nails look well-groomed.

Translated from Dutch by AWS