does product contail urea?

Doesn't cure anything! They even admint in enclosed info that there is no cure for the fungus, that this only mkes the nail look better.

How long does the .33 fl oz package last

They stay on overnight; I would remove when you shower. 14 patches is 14 days.

Does Kerasal Renewal clear fingernail fungus?

Yes, it worked pretty good. I used it twice a day at first, then once a day. Filing the top of the toenails is important while using this. Still using the tube since Jan 5th. Just turn the tube upside down and it comes out.

What is the percentage of Urea in this product?

I'm not exactly sure but what I am sure of is that kerasal nail renewal cures nail fungus every one of my fingers and toes was eat up with fungus after using kerasal nail renewal for 6 months my nail are 100% better I highly recommend you want be disappointed you just need to stick to using the product a few times a day