So impressed with this stuff, has stopped flaking and nails are strong and smooth [[https://www.boots.com/opi-repair-mode-bond-building-nailserum-10333633?traffic=paid.shopping&gad_source=1&gbraid=0AAAAA-AdmwSfswZTP7nliYTbcMlhJ7DnO&gclid=Cj0KCQjw5azABhD1ARIsAA0WFUHBPm6LmymxxHLghT4M713EJRfwhtxgEMT_IkyC7gOWtWZPYSDbtboaAhecEALw_wcB&gclsrc=aw.ds OPI Repair Mode Bond Building Nail Serum - Boots]] got it cheaper on ebay