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Availability:
In Stock.
Arrives
Saturday, Oct 24
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Features
- 99% nail keratin repair when used as directed
- 94% protection from damage
- 4x stronger nails in 6 days when used as directed
- Cap made with PCR
- Vegan formula, *No animal derived ingredients or by-products
Description
See more Bond Building Nail Serum Nail Envy Strengthener Nail Envy - Big Apple Red What is Ulti-Plex Technology? Ulti-Plex Technology is Patented, breakthrough technology that allows Repair Mode serum to penetrate the nails, interact with nail keratin, and create new bonds. How does Repair Mode repair broken keratin bonds? Repair Mode repairs from inside via biomimicry of nail’s natural keratin. This serum contains Patented Ulti-Plex Technology that penetrates from within the nail recreating protein bonds in the nail. I do my nails at home and like to keep my nails coated.Can I use Repair Mode under my OPI Lacquer shades or treatments? Yes, you can use Repair Mode as a Prep Booster with your OPI Lacquer shades or Nail Envy. Apply 2 coats of Repair Mode to clean, bare nails, and prep those nails prior to lacquer application. I like to go to the salon and have my nails done, can my nail pro use Repair Mode under my OPI salon services? Yes, your nail pro can use Repair Mode as a Prep Booster under your OPI salon services. Can I use Repair Mode while I have an OPI product on? Repair Mode can be used on visible new nail growth while you are wearing your favorite OPI products.
Language : English
Product Dimensions : 1.88 x 1.34 x 5.17 inches; 0.63 ounces
Item model number : 99399000051
Manufacturer : OPI
Best Sellers Rank: #4,750 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #12 in Nail Strengtheners
#12 in Nail Strengtheners:
Customer Reviews: 4.2 4.2 out of 5 stars (7,467)
Item Weight: 0.02 kg
Liquid Volume: 0.3 fluid ounces
Number of Items: 1
Size: 0.3 Fl Oz (Pack of 1)
Brand Name: OPI
Manufacturer: OPI
Item Type Name: Nail Treatment
Model Number: 99399000051
Manufacturer Part Number: NT200
Item Form: Liquid
Specialty: Protein, Repair
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Oct 24
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
**Update: it's been over 6 months and now I use this every polish change. The results are just unbelievable. I can go without polish, and my nails grow long and strong! It's the first time in my life I can say that. I now combine with hard as hoof cream and regular cuticle oiling and can't say enough great things about how much this has transformed my nails. No more soft spots or bending. 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!
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Reviewed in the United States on January 12, 2026 by Cynthia MP
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.
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Reviewed in the United States on February 24, 2026 by S. Scott
I absolutely love this serum. I had acrylics and of course my nails were extremely damaged after. I was using this daily after and it really helped strengthen my nails. It takes a while for the nail to grow out but the damaged part of nail is strong and not bendy because of this. I’ve hit my nails on stuff and I get no breakage . This has never happened before. You can see at the tip of my thumb were the damage is at this point but again my nails are so much stronger!
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Reviewed in the United States on August 2, 2026 by Tori Thomas
I've been using this nail serum for a couple of weeks, and I can already see some improvement. My nails feel stronger and don't peel as easily as before. The serum absorbs quickly and isn't greasy, which makes it easy to use during the day. The only reason I'm giving it four stars instead of five is that I expected faster results for the price. Overall, it's a good product, and I would continue using it.
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Reviewed in the United States on June 26, 2026 by Andreina urbina
I accidentally use callus remover instead of cuticle remover and badly damaged my nails. They were peeling and getting dry crack lines from the nailbed to the tip. I used the OPI Repair Bond serum for a week and they are much improved. I do 2 coats once a day and usually one more coat later in the day (I have it on my desk right in front of me). It basically disappears into your nail. I am going to continue using it as the damaged part grows out and plan to use it going forward since I've always had weak nails.
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Reviewed in the United States on September 3, 2026 by Maine68
I don’t think it did anything. I used it twice a day for 8 days and this is my before and after picture. Maybe the nail damage is too great to help it, but for $25 I wasn’t impressed. Picture on the left is before and right is 8 days later.
Reviewed in the United States on August 15, 2026 by Julie
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! 🌟
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Reviewed in the United States on February 21, 2025 by Kameelah
I’ve been trying to repair damage from years of gel nails and this has become part of my nightly nail routine. I’m still a little on the fence about whether it truly “builds bonds,” but this is already my second bottle so I clearly think it’s helping somewhat 😂 I generally trust OPI products because they usually make quality nail products. I use it at night instead of twice daily like directed because I wash my hands constantly working in nursing and morning application feels wasteful for me. It dries quickly, hasn’t irritated my super sensitive skin at all, and my damaged nails do seem to be improving over time. I’m not sure I confidently recommend it because I honestly don’t fully understand how effective the ingredients are… but apparently I’m repurchasing anyway.
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Reviewed in the United States on May 16, 2026 by LollieAnne