body{margin-left:12%}Product ReviewsRated 4.47 out of 5 stars458 ReviewsMost Helpful Positive ReviewIntense strengthenerThis is an amazing product from O.P.I. to harden, strengthen, nourish, even condition nails. Working 2 jobs, constantly washing my hands, artificial nail use, swimming, crafting and daily life my fingernails gave several issues. Brittle, thin as paper, split at the tips, and if they do grow at all they immediately break from weakness. I wear artificial nails regularly to cover my natural. This formula is a runny, white color that does have a small polish scent but not bad at all. After 1 use, with 2 coats there is an immediate difference in the appearance and strength in my nails. After only 1 week it's like I have brand new nails. I've never found products that work so miraculously and I don't have to wear artificial nails. Not only are they strong, but this formula contains biotin and vitamins beneficial to fingernails so my nails are no longer super dry. They feel nourished and conditioned. This is the ultimate product for nail strengthener especially paired with O.P.I. Repair Mode. Everyone will be envious thanks to my beautiful nails from nail envy.Most Helpful Critical ReviewI'm skipping this treatmentFirst I want to state I wasn't expecting a full 180 with my nails. I have damage from years of teaching myself nail extensions, gel manis, etc That being said I was expecting to see some improvement. Nail Envy does make it seem like your nails are stronger but after removing it, it's just the actual liquid shield. To be honest even during everyday life of cooking, cleaning, & washing hands, you could tell my nails were still pretty weak. So, the feeling was no different to me applying a gel over them. I still experienced chipping & peeling of my nails. 2 of my nails on my non dominate hand ripper off. Lastly, the Nail Envy smell is very similar to nail polish. So, if you're like me & you get headaches from that scent, skip this treatment. I felt so sick towards the end of the Nail Envy treatment.Reviewed by 458 customersVery recommend!5Maria from TexasThis product is great, it made my brittle nails strong and shinny. I have very weak nails after using press ons and this products together (nail envy and the OPI repair mode) brought my nails back to life.I would keep buying.5Mindy from ConnecticutExcellent and my nails which were split and dry are getting stronger.This stuff works really well to rebuild your nails!5Becca27 from MadisonALThis stuff works really well to rebuild your nails! Using this after you get acrylics taken off to give your nails the opportunity to rebuild is best. Or if you aren't like me and actually have thicker nails you can use this and not even have to get your nails done. This really strengthens your nails.Garbage1Sara from USAWFUL---DON'T BUY. This used to be an amazing product but it is NOT the same anymore. I used it for over a decade because it was so effective but now it's useless and starts peeling within a day! Does not work at all. It's literally GARBAGE now.HORRIBLE NEW FORMULA. BRING THE OLD FORMULA BACK!1:( from ChicagoI, like many others in the reviews, was loyal to Nail Envy for many years. It would be the only thing I would have on my nails, 24/7. But this new formula IS THE WORST. Makes my nails so brittle and they peel off at the tips. Smells horrible too. I really miss the old Nail Envy and I'm now in search for a new nail strengthener.New formula is not good :(1Kelly B. from IndianaI have used Nail Envy for YEARS and it worked flawlessly! Made my nails strong and healthy. This new formula chips so quickly and is leaves my nails dry, brittle, and weak. I'm so disappointed. I originally thought they just changed the packaging, but this formula had to have changed. And not for the better. So bummed out.Not a clear top coat3na from SyracuseJUST - FYI - IF THIS COAT IS USED ON ANY COLOR OTHER THEN CLEAR YOUR TOP COAT WILL HAVE A TINT TO IT WHEN YOU USE IT FOR OTHER COLORS . AFTER THE FIRST USE IT WILL NEVER BE A "CLEAR " TOP COAT . DISAPPOINTED FOR SURE.Why did OPI change their ORIGINAL formula?1Sue from Charlotte, NCI was a loyal customer of OPI's ORIGINAL Nail Envy formula and now it is discontinued and they've changed the formula for the Nail Envy product that you can find in stores. This is terrible as my nails are now shorter than ever because they are splitting, peeling and breaking. Horrible new formula and I will be finding another brand.Less than adequate results1Terry from MississippiHave used Opi Nail Envy Strenthener for many years with outstanding results. Totally transformed and maintained my nails with little effort. Recommended the product to many of my friends. The NEW Original with new vegan formula definitely does not perform like the old formula. After after several attempts I discarded the product. Also, it's way too shiny. Nails looked terrible. I have searched the internet and other sources to find the old formula but no success.love this product5Kris from Michiganproduct works great, I've used it for yearsBring back the old formula!1Christi from NCI've used Nail Envy nail strengthener for 10+ years and my nails have been amazing….until they changed the formula. Now I have dry, brittle nails and am in search of bottles of the old green label formula! "If it ain't broke, don't fix it"!New Formula Not Great2char from ChicagoI don't love this new formula… I believe they changed it recently, and it has been causing my nails to peel more than they ever have before. I'm using it as directed. With the old formula I was able to grow out any peeling and brittleness on my nails. Now, I'm better off just not wearing anything at all. I might try the Repair Mode because I've heard good things but Nail Envy just is not it.used to be great, not so much anymore2chels from cheyenne wyI have used this product for the past 2 years. I don't know of they reformulated this year but label used to be green now it's black. I use it as directed and have never had a problem until recently. Before, it made my nails strong and i was able to grow them out for the first time in my life now my nails are peeling, cracking and breaking.EDITING REVIEW1AK from Erie, PAI jumped the gun on singing the praises of the reformulation as I haven't used it during my work week. Let me just say that my nails are peeling and chipping, and I freshly applied on Sunday night. It's only Tuesday. BOO to the new formula!Changed formula2goingback2orlynaildefense from ChicagoNew formula is awful. Chips and peels off super easy. Even while dry you can literally bump your nail on a sharp surface or whatever and itll take a gouge out of the polish. After a day or two it starts peeling off anyways around the edges of the nail. The old formula literally was bulletproof lol you would put one coat on and it would not budge until you took nail polish remover to it. So disappointed.Opi nail strengther1Lisa from Brunswick georgiaDid not stay on my nails it kept pelling off.I will definitely buy this product again5Georgia from Hagerstown MarylandLove your store5 Stars for Original Formula, 4 for New4AK from Erie, PAThe newer formula still does a great job though! Nothing else holds a candle to Nail Envy. My nails are put through the wringer due to work and would always split and peel. I can actually grow my nails now!I Bring this to my manicurist to apply5Kathy from New Hartford, NYLove this treatment to apply in between my manicures. Follow instructions and your nails will grow nicely!Nails looking good4Anush from Los AngelesI used it for a month and can say that the quality of nails have improved. There is less chipping and the damage from the nail extension has healed.Really Works (if you follow directions)!5BA from Chicago areaI have tried various OPI nail strengthener over the years but went back to this one. Amazingly (!) if you follow the directions it really works - at least for me.Love seeing results!5Shana1592 from Bristol, ConnecticutHelps strengthens nails. Helps growth. Became a nice routine and love seeing results.Formula Changed3Kathryn from St. Cloud, MNThe Original formula changed: It's thinner, runnier. I'm disappointed.5 stars5Gail from Bowling Green KyThis is the best for strengthen your nails. I've been using this for many years. I tell all my friends about this product.Strong and it's Vegan!5Angieq from QueensThank goodness for this product. I've put acrylic on my nails for years and my nails were so damaged, I was embarrassed to leave them naked. After using this nail strengthened for a month now. I've seen some amazing results. My nails are healthy and shiny again. No peeling or splitting of the nail. The product dries now quick and hardens the nail. I recommend trying this product. Your nails will thank you.