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💅 Unlock your nails’ full potential—stronger, smoother, unstoppable!
OPI Repair Mode Bond Building Nail Serum uses patented Ulti-Plex Technology™ to rebuild nail keratin bonds inside the nail, delivering 99% repair and 4x stronger nails within 6 days. Its vegan formula offers 94% protection against damage from everyday exposure, making it a must-have treatment for professionals seeking durable, healthy nails with rapid visible results.






















































| ASIN | B0BXFM8CWF |
| Best Sellers Rank | #4,961 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #12 in Nail Strengtheners |
| Brand | OPI |
| Brand Name | OPI |
| Customer Reviews | 4.2 out of 5 stars 7,227 Reviews |
| Item Form | Liquid |
| Item Type Name | Nail Treatment |
| Item Weight | 0.02 Kilograms |
| Liquid Volume | 0.3 Fluid Ounces |
| Manufacturer | OPI |
| Manufacturer Part Number | NT200 |
| Model Number | 99399000051 |
| Number of Items | 1 |
| Size | 0.3 Fl Oz (Pack of 1) |
| Specialty | Protein, Repair |
K**H
Great Strengthening Serum!
I've tried various products to strengthen my nails, particularly my left middle finger due to nail splitting all the way down to the matrix from over washing my hands due to my occupation. When i say I've tried a plethora of products, i am not exaggerating! Various nail hardeners, oils, biotin supplements, zinc, collagen peptides, gel powders, and even nail avulsion (total nail removal) 😖. I began using this product about six months ago, and noticed a wonderful difference in my nails! They are much stronger, healthier and I do not have to use any nail hardener. I apply in the morning and before bed. I do admit that although it has bot completely repair my split nail (you can see in the picture and video) it does make it much more manageable and I keep it filed very short. You can see how my nail was before I began using this serum in the last photo and how split it was. My nails look clean and I also apply either Dadi's Oil afterwards or Healthy Hoofs nail balm, also available on Amazon. I still take vitamin supplements along with collagen peptides, but I do believe this serum helps significantly. One bottle 🫙 lasts me about 6 to 7 weeks, and that is with application on all of my nails. I am amazed by how quickly my nails dry - in mere seconds-💅🏿 and how I could apply my nail balms and cuticle oils immediately afterwards. It took about 2 weeks for me to see some improvement and about one to two months to see a sustained response. Some folks complain about the price 💰, but honestly, I believe you get what you pay for and you can't place a value on your health! I still feel it is very economically priced given all of its benefits and duration of use. I have recommended OPI Repair Mode to others, including my hand surgeon and I believe she has recommended to her patients as well (after she saw my before and after picture 📸 😆 😃). I say give it a try and if it works for you, then great, and if not, at least you tried it for yourself, but I honestly believe most folks will be pleased with the results! Thanks for taking the time to read my review! 🌟
A**A
Saved my nails!
My nails were so incredibly brittle and started to peel in layers mostly due to a few a round of gel manicures. Even when I stopped, for months I never seemed to be able to get them to grow back, they broke and peeled so easily. I bought this treatment and have been applying it consistently for a few weeks combined with a cuticle oil and my super brittle nails are now stronger and longer and have stopped peeling! I did have to keep them very short at first while they started strengthening, but be patient! The results do come, I started seeing improvement after the second week. I almost can’t believe it, it 100%worked for me.
I**!
Saved my nails!
TLDR- GET THIS!!! It worked for me w/consistency and patience. Product is a watery consistency and dries fast! My nails had become thin and brittle, so my solution to keep them from bending and breaking below the free edge constantly, was to start keeping them coated in builder gel and UV gel polish. That worked great for a few years, but my nails were in desperate need of a break from having them constantly polished. Once all of the gel polish was off I knew I was in trouble. My nails were now beyond thin, they were paper thin and peeling. The slightest touch would bend them. It was painful. I couldn’t even scratch myself. And of course, when you know you can’t scratch, is when you become the itchiest human ever. It was torture. All of my nails actively hurt. So I went on the hunt for something that could help. I eventually settled on this OPI Repair Mode. It arrived and I started using it immediately and religiously. Twice a day, every day. Without fail. I had reminders set on my phone to be sure I didn’t forget (thanks, ADHD!). The product itself is thin and watery. Not at all like nail polish. And you don’t have to have a steady hand to apply it. Just slop it on, wait a minute or so and go. Super fast and easy! The first month of use I would go back and forth with myself trying to figure out if it was working or not. It was definitely working some and my nails had become less painful, but I still couldn’t scratch any itches I had. My nails were still thin and breaking, even though I kept them as short as possible. Toward the end of the second month is when I finally knew progress was being made. My nails weren’t peeling or painful anymore. And I was able to lightly scratch my itches again. Finally!! After a solid 2 months of use, I decided to cut down to using the product once a day and start incorporating revitalizing cuticle oil (I used Cuccio that I found here on Amazon) into my nail rehab routine. I would use the cuticle oil on my nails and the surrounding skin (rubbing it in as much as possible) in the morning and usually at least once during the day, then at night I’d put on the Repair Mode. I did that for a couple of weeks, then stopped using the Repair Mode altogether. Now I just use the oil a few times a day without a schedule or reminders. Just whenever I remember or feel like my nails are feeling extra dry. It’s been about 3 months now and my nails are almost back to what I’d call normal. I really hope this review helps anyone who was in my shoes. It’s not fun to have painful, bendy, peeling, breaking, nails, but there is hope! I hope this works for you like it did for me!!
A**E
Effective and Strengthening — Really Works
I really like this bond building nail serum! It works well and has noticeably improved the strength and flexibility of my nails. My nails feel healthier, and it has helped increase their stretch without breaking. The application is easy, and it absorbs quickly without leaving a sticky residue. If you’re looking to strengthen your nails and keep them looking healthy, this serum is a great choice!
S**T
Fantastic! 1st time in my long like my nails are strong.
Edit: At first I was very disappointed with this product. I used it two a day, my nails kept breaking, even though they seemed to be getting stronger. Finally one day I clicked. I actually had to trim my nails because they were foo long. I couldn’t believe it. The 1st time ever, and I’m 60+. Even well into post menopause my nails are finally fabulous. Strong, hard and even a crack that had run through on nails forever is gone. Still working on another, but it’s healing up nocely. With the cost. Try it. You’ll like it. Just remember to wait a few weeks before you you give feedback. I’m on my 3rd bottle.
K**R
It works!!!
Amazing product! I’ve been using this with OPI’s nail envy and my damaged nail beds that I’ve had for years are practically gone! My nails are strong and growing . Before I started my nails would chip, peel and break and a couple nails had terrible deep ridges that would never grow out. I can barely see them now. So happy with this product. It takes time , I started in February and really started seeing results in April by May I felt like I had my healthy nails back!
A**Y
Didn't work well for me
At first I thought this was working but after a few weeks my nails aren't looking just as brittle as ever. I love Opi and am disappointed.
C**Y
Only product that fixed my split nail!
At home gel nails left my natural nails weak and damaged, especially my ring fingernail, which kept splitting down the middle as it grew. I tried several products to repair the damage, but nothing worked until I found this one. It helped strengthen my nails and finally allowed my ring fingernail to grow without cracking.
I**A
MEJOR PRODUCTO PARA UÑAS FRAGILES Y DAÑADAS
Compré este producto la semana pasada porque después de la última retirada de semipermanente que me hice noté que mis uñas naturales estaban súper frágiles y dañadas, hasta el punto de que me dolía horriblemente a la hora de hacer cualquier cosa con ellas. Me hago yo misma la manicura en casa y hace poco probé a usar unas uñas postizas, ha sido lo peor que he podido hacer en este mundo... después de quitarme las postizas, el pegamento me dejó las uñas horribles y me dolían mucho, así que probé a usar builder gel para protegerlas y ya no me dolían. Cuando pensé que me habían crecido lo retiré completamente y seguían mis pobres uñas naturales fatal. He probado bastantes productos que dicen endurecer o mejorar la uñas natural pero ninguno igual a este. Con la primera capa que me puse pude notar la diferencia... mis uñas pasaron de estar súper débiles y que dolían solo con verlas a poder tocarlas y sentirlas más fuertes. Solo con el primer uso me sorprendió porque ahora podía limar mis uñas naturales sin llorar del dolor. Ahora llevo ya usándolo durante los 6 días que promete que hace efecto, siguiendo las instrucciones de ponerlo 2 veces al día y sin duda mis uñas están maravillosas y más fuertes que nunca. Súper bueno el producto, es el mejor en el mercado ahora mismo y por lo que tengo entendido OPI tiene la patente, así que es el único en el sector con esta forma reparadora. Por lo que he podido leer, el producto actua en tu uñas creando más uniones entre las células con keratina y vitaminas. De esta manera se incrusta en tu uña, no es solo una capa protectora que se pone encima y hace de escudo, este producto penetra en tu uña y la hace más fuerte en su composición natural. Increíble!! Además, es súper fácil de usar y de poner, es un pincel súper fino que ayuda a llegar a todos los rincones y se seca rápidamente, en menos de un minuto ya está seco y puedes seguir con tu vida normal. No es nada pegajoso ni nada, es perfecto y da un resultado maravilloso!! Por lo que tengo entendido puedes ponértelo como primer antes de la base para la manicura semi y seguirá teniendo efecto. También he visto que puedes aplicarlo en tu uña a medida que va creciendo como si fuera aceite de cutícula para que la nueva uña que crece esté fuerte!! Es lo mejor del mundo y lo recomiendo 100%!!!
G**A
Unico prodotto davvero valido
Un prodotto ottimo, sono senza parole, davvero funziona. Avevo le unghie sfaldate dopo mesi di gel e dopo solo due settimane di applicazione noto una differenza enorme. Consiglio!
P**A
El mejor producto para las uñas
Es lo mejor para la reparación de uñas y hace que te crezcan rapido
Z**A
No results
Doesn’t worth a fils
J**P
Persevere twice a day.
I agree with the five star reviews here. Years ago I had acrylic on my nails , as a child I bit my nails , when I finally broke the habit my nails were not strong enough for really any length. They have improved over the years but a couple of months ago many of them took to splitting from tip towards the base . Having already used this product intermittently and found no improvement I was skeptic. But I started twice a day, and with the OPI nail strengther applied for shine ,and hand and nail cream in the evenings I now have ten good looking nails. So far they have survived gardening work , but having got them I am very careful !! Took about ten days to see improvement.
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