I like this strengthener. It yellows my nails about as much as any other polish, but it did the trick. Use as a base for your polish to help ease damage and the polish from discolouring your natural nail.

I am very unsatisfied with this product, I paid good money for something that did not even work, yes I followed the instructions to a T.

Of course OPI is a higher-end brand so it is a little mroe expensive but its totally worth the price. I have been trying o grow my nails for some time now, but they kept breaking off because they were so thing. I've been using this for 4 months, putting it on as a base coat before my polish and my nails are so hard now. I love this product.

This stuff is amazing for nails! I work with my hands for my job, and this is the only product I could find that helps prevent my nails from chipping/breaking! I love that you can use it under nail polish as well! They have a few different formulas. I wish it were a bit cheaper, but you cant put a price on quality :)

I love OPI nail envy! on more than one occasion it has literally saved my nails from being a broken peeling mess to being as hard as a rock!

THis is really good stuff. MY nails are always in bad condition but this stuff stops them from peeling, and makes them look so shiny!

my nails are always peeling, so i was recommended the nail envy by a co-worker. I just love that i can put it on my nails under my regular polish and it while it helps strengthen my nails. My polised stayed on longer too. I love that it comes in matte and regular(shiny). so that you can wear it alone and still have that polished manicure look. It also isnt thick, which i find with some other nail strengtheners i have used in the past