Has anyone tried this ?
My nails are soft and peeling. I have been on biotin for 6 months to try and improve them, I also take calcium, collagen and hyaluronic acid. And cod liver oil when I remember.
All to no avail.
I'd love to try the OPI but it's very expensive- €40 in Boots Ireland for a small bottle 
If you've tried it what do you think ?