It works, sorta.

I have very thin nails that split and break. I've tried tens of strengtheners, and this is one of the few that actually help little bit. When I use it consistently I find my nails to be less likely to split and a little more resilient, to a point. I still can't grow my nails long even when using this.

It does bubble when used as direct with 2 coats so I just use 1 and let it dry completely.

In terms of price, it is one of the more expensive strengtheners, but it often showed up at Winners for about $13 instead of the regular $20.

The Best

After taking of my gel nails and tips my own nails we so thin and fragile. Using Nail Envy has been my go to for strengthening my natural nails. Always go back to this product as only product that actually work.

Excellent treatment that can also be a basecoat

I have fairly strong nails, but sometimes my diet isn't great, I've been traveling a lot, I've had to do a ton of dishes. Lots of things change my nails. I had been living out of the country, my diet was all sorts of bad and I found it really wrecked my nails. When I came back home I read some reviews on nail envy and decided to splurge on the bottle. It is expensive, but I spend a lot less time cursing my nails because of it! I've gone through countless bottles in the past few years because I am now a die hard fan. My nails went from splitting and peeling back to their normal strong and long. While it's on the expensive side, it will get your nails situated and you'll be happy you didn't buy countless other cheap bottles to "try". Just get the good one and be done with it!

Awesome product

This product does exactly what it is supposed to. I have dry brittle nails and this polish helped them grow! Goesnon clear and dries quickly. Good product for a good price.

Strong nails need nail envy

This stuff changed my life. It helps grow strong and long nails. Mine were weak and peeling. This changed my life. Just avoid getting near your cuticles because it drys them out. I use it everyday for a week and then take it off and start again for when I need long and strong nails.

I swear by this product

This is my regular choice for a nail strengthener. I've used this polish for years now and swear by it completely! My nails are super long and strong and healthy. I went from an long time nail biter to strong beautiful natural nails. I've never been one for fake nails or even gel polish as it wrecks them severely, this is a great solution for someone starting out fresh or wanting to try something new.

AMAZING!!

The nail strengthener works wonders! After constintaly getting gel nails my nails were very weak and cracked easily. I used this product for about a week before I saw a noticeable difference.

Definitely a regular user

I started using this on the advice of my esthetician and now use it envy 2-3 days to help with nail strengthening. One piece of advice though would be to balance use with a moisturizer so nails don't become too brittle and crack easily

Great Clear Coat!

I love OPI's Nail Strengthener as a clear coat that also makes my natural nails look healthy and shiny. I do not always have the time to keep up with painting my nails so a clear coat/strengthener is a great treatment that doesn't need constant touch ups. Really does strengthen nails which I notice in only 1-2 applications!

Works well

This product does exactly what is titled! It really does strengthen your nail. I have super flimsy nail that would break off if I grew them longer than a centimeter or two. But I was able to grow them almost 3 or 4 centimeters!