I On Nails: Ultimate Nail Strengthener, Growth & Repair, Clear Polish Hardener, Keratin Treatment for Damaged Nails - Hard as Nails Elixir.

Nail hardener leaves your nails very resistant, plus they grow very fast and very healthy without breaking or chipping.

Works great. My nails are strong and long now. This is the best product I have. I tried so many and they are a waste of time and money. I tell everyone about this product. It is worth a try.

My nails were paper thin after having gel nails put on 3 times and taken off with a shaving method that ruined my nails. This worked in fixing my nails in less than 6 months! They are as strong and beautiful as they used to be.

Day 1: Directions are twice a week (NOT SEVERAL TIMES A DAY) DAY 2: Applied nicely, dried quickly. 2 coats. (Did NOT burn or cause some bizarre chemical reaction as someone suggested. And I am autoimmune) Day 3: First day after application: wore my kitchen gloves to clean kitchen blinds. Polish didn't peel, chip or change, even though gloves were soaked with sweat inside. (Sally Hansen hardener would have peeled off and chipped.) Day4: Put one more coat, as instructed. (Q: do I remove polish before applying the second time? I didn't.) Day5-7: Normal housework. No chips or peeling. Great stuff!!!!!

Works very well on weak brittle nails.

Buy it .. I buy a lot of nail strengtheners and this one stays; doesn’t peel off doesn’t burn actually does what it says ! Use twice a week.. I leave on for a little over a week then take it off and start over ! Definitely worth it and I’ll be buying again !

I love this nail hardner.

I think this product changes color with age, suppose to be clear turns blue with age