No, I don't know --I know mine did that for a long time. They told me it was because my hands were in water all the time and to use gloves --- I did, that didn't help. I tried everything -- calcium, Knox geletin, gloves, putting soap under my nails when working outside (WHAT nails????). Nothing worked until this HOOF. I sure hope it works for you! I'm now on 2nd manicure (my own) using polish ...wow...what a heady feeling. Thinking of all that $$$ for fake nails for over 20 yrs! sigh. think of the FABRIC I could've bought!