

💅 Repair Mode: Unlock your nails’ full potential and never settle for weak again!
OPI’s Repair Mode Bond Building Nail Serum uses patented Ulti-Plex Technology™ to rebuild 99% of nail keratin damage, delivering 4x stronger nails in 6 days with 94% protection from daily wear. This fast-drying, vegan formula visibly improves nail strength, smoothness, and resilience, making it the go-to treatment for professionals recovering from gel or acrylic damage.





















































| ASIN | B0BXFM8CWF |
| Best Sellers Rank | #4,538 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #9 in Nail Strengtheners |
| Customer Reviews | 4.2 4.2 out of 5 stars (6,574) |
| Item model number | 99399000051 |
| Language | English |
| Manufacturer | OPI |
| Product Dimensions | 1.88 x 1.34 x 5.17 inches; 2.08 ounces |
A**R
I'm a believer
I bought this as I was desperate to try anything. I have one little nail that refuses to grow in strong and keeps splitting down the center, vertically. I have kept it super short to try and not have it ripped off. I had polish on all the time. It took longer than advertised, more like 3-4 weeks to see results but it works. My nails are coming in stronger, less ridges, and that one nail is NOT splitting. Put it on twice a day with no polish or hardener or anything. Dries very fast. Really helps, I've seen a difference.
N**H
⭐️⭐️⭐️⭐️⭐️ Impressive results + clean ingredients!
This serum really strengthened my nails and helped reduce peeling and breakage within a week. I love how lightweight it feels, and it absorbs quickly without leaving any residue. The ingredient list is short and effective, which I appreciate: • Alcohol Denat. – helps deliver the formula and evaporates quickly for fast drying. • Water (Aqua) – hydrates and helps blend ingredients. • Maleic Acid – bonds and fortifies the nail structure for strength & repair. • 1,6-Hexanediamine – supports nail surface bonding and resilience. Great for damaged, weak, or post-acrylic nails. I highly recommend this if you’re looking to rebuild nail strength without harsh ingredients. 💅✨
C**P
Great for nails wrecked by gel manicures
Background: 11 years of gel manicures, occasional dip manicures, press-ons, and a recent run of semi-solid gel strips left me with brittle, split, ridged, and overall damaged nails. I almost never have taken a break between polish changes during that entire time. I was using Gemini AI to help come up with a plan to heal my nails, and one recommendation was this product + Nail Envy. I diligently applied this twice a day for 6 days, even taking it with me while traveling. It is a great way to do a forced reset, since you must apply this on bare nails. Day zero before applying I soaked my nails in warm water + olive oil, and I did this again on day 6 before my last dose. I did a full manicure on day 6, cleaning my cuticles with a glass cuticle stick, shaping nails (filing only in one direction!) and gently buffing. My nails looked so much better. My photo is the "before" from the manicure and it is hard to describe what an improvement this is from day 0 (even if it doesn't look like it). I didn't experience any of the nail lifing some people online describe with this product, and overall my nails seemed much more firm with less peeling. I do still have two nails which seem a bit soft in localized spots, so I'm going to get an ISDIN product with silica in it to see if I can correct that while they continue to grow out. I've applied Nail Envy in my "after," and although I don't like the nude color very much I do feel that overall the combo is helping my nails! I'm nervous not having the strength of a gel manicure, but will have to use gloves during dishes and stop using my nails as tools to try and keep them from breaking while they grow out. I'm going to try to go 6 months without gel using Repair Mode weekly with clear Nail Envy polish to recover from all of this damage. I blame myself because I'm not very patient with removing gels and press ones, so most of my damage is from pulling-trauma and acetone. I'm just so glad there is something out there to help my nails recover quickly!
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!
A**R
Miracle product for restoring natural nails
Purchased this in conjunction with OPI Nail repair and together, they restored my natural nails after they were destroyed by gel manicures. This product won’t fix your nails overnight but with regular use you’ll be amazed at how effective it is.
S**F
DO NOT BUY IF YOUR NAILS ARE…
Do not buy if your nails are severely damaged from gel/acrylics or are naturally thin. I thought I did my research, but it was until this damaged my nails more that I found out more about the product. The salon drilled all my gel off which thinned my nails severely. I didn’t think this would fill in those missing areas but I WAS hoping it would help with the keratin bonds and build strength with the nail I had left and any new growth. I used the product as directed, twice a day (about 12 hours apart) for 6 days. After I stopped using it, I noticed my finger nails felt like they were burning. I then noticed that the nail was separating from the nail bed. In the picture, my nails were already filed down as short as I could, down to the hyponychium. You can see that my “new free edge” is way below where it should be. This seemed to have happened because since the nails are so thin, the solution soaks into the nail bed (skin), which it’s not made for. The reaction of the chemicals/ingredients with the skin causes the separation. This is meant more for healthy layered nails that may have minimal peeling or other issues. But the nail should ideally have most of its layers so that to solution is only penetrating nail.. There should really be more information about this from OPI… I wanted to save my nails and made them worse.
P**L
Didn't notice any difference
Save yourself the trouble and just go buy nailtiques 2. I didn't see any difference in strength or peeling with the OPI but with nailtiques I saw a difference in just a week, the peeling is gone, and my nails are breaking much less.
M**L
Boy was I wrong
Wow! This stuff is amazing! I put some on as soon as I received it I could feel it work. I have use it for 8 days now and my nails look a hundred times better and they haven't chipped or broken! It does just what it says it will. I will definitely buy more. It's a great price the largest amount a great value.im a man that thought nothing would help! Boy was I wrong!!!
A**A
Le unghie mi si sono sempre spezzate sulla parte “rosa” un dolore cane e mai avute più lunghe di un millimetro . Il prodotto funziona! Le sostiene, le ripara. E quando l’unghia si spezza ( perché ovviamente non fa miracoli e quindi le mie unghie si spezzano comunque) si spezzano solo sulla parte “eccedente” la rottura si blocca e non va oltre. Non ci avrei mai creduto ma una bella svolta.
I**A
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%!!!
Y**.
Si me funciona y a mi hija también! Es costoso pero vale cada peso, puedo traer las uñas desnudas y hacer cosas en la casa y sin maltratarse antes no podía tenerlas descubiertas ni un día sin que se partieran o abrieran en capas, mis uñas eran frágiles y delgadas ahora están súper sanas :) Si tienen dudas no lo piensen ! Nadie me pagó! Jajaja solo que ningún endurecedor del mercado o métodos caseros me habían ayudado .
G**Y
This stuff this some super serum! Nails healing and growing better than they ever have
D**S
Bought by my wife and find that it's a good item if you ever had your nails done in a shop and then you get the polish taken off then you find that they are breaking use this product and that helps your nails to strengthen
Trustpilot
1 month ago
1 month ago