Can anyone recommend a good strengthening nail polish?

[WhySoSirius]

I'm trying to break my lifetime habit of nail biting and need something to turn my rather flimsy nails into things of steel!

Not against nail biting just in general

Yes!

OPI Nail Envy. It is £18 in Boots I got mine (the matte version) from ebay for about £8. Honestly, it's amazing.

My nails grow very very fast, but split often - more since I'm a year post-pregnancy. I started using this about a month ago, and I kid you not, I haven't had one break since then, no peeling bits (which has always been the worst for me) and my nails are now about 5mm over my fingertips. They are too long for me really, but I can't bear to cut them a I am astounded they have lasted this long!

Actually just checked my ebay account, bought it end of October so closer to two months use but still phenomenal. The good thing about the matte one is that it looks like the natural sheen of your nails, not too shiny, not too matte, so men can use it (have been trying to sort out a split in my DHs thumbnail!) or just by itself it looks very natural. Apparently you need to remove at least every 7 days or it yellows your nails, but I always put a colour on top anyway so this doesn't bother me especially.

Yep OPI nail Envy. I am a chronic nail biter but current put this on religiously every night and I have stopped nibbling! I got the Shiney one so it looks like I am wearing polish and a visual clue not to bite :)

I can not recommend OPI nail envy enough.

Before I started using it my nails were paper thin and would split and tear as soon as they grew even a little bit past the nail bed.

Thanks to OPI NE I now have long strong beautiful nails.
It is worth every penny.

Nail Envy fan here too - I only use it as a basecoat once every week or two now for maintenance and my nails are perfect.

Wow! OPI nail envy it is! £18 though you say [shocked]

Thanks for the tip, I've just ordered one!