Well blow me down, this does actually do what it says it will! I put it on...

Well blow me down, this does actually do what it says it will! I put it on for 6 days, and by the end -actually by Day 4 - my nails stopped flaking. Before, they would separate into layers at the tip, and the top layer flake off, and then the other layers too. Now it all stays together. Sadly my nails still break off, just without flaking first. So I'm combining it with another brand's Nourishing Nail Pen, which helps. NB You need to put oil on nails when using OPI's stuff because it's quite drying, my nails looked dry and ridged by Day 6. But oil sorted that.