
I have tried many products for nails and for the past 5 years I have been using Herome Nails products. It's truly the best nail hardener I have ever used. it is intended for extremely weak nails which are very prone to splitting. Combine with the Nourishing Nail Oil you'll really have great results in less than two weeks. It's not easy to find it in stores, you can order it online or in Sephoras stores.