Repair Mode Bond Building Nail Serum | Keratin Protein Nail Strengthening Treatment | For Stronger Nails & Nail Growth

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.

I’m constantly caught in a cycle of wanting long, salon-perfect nails and needing to leave them bare to recover from the damage. After a particularly rough manicure left my nail beds thin and sensitive, I decided to try the OPI Repair Mode Bond Building Nail Serum. I’ve always trusted OPI, but this is different from their usual strengtheners - it’s a liquid serum rather than a thick polish. What blew me away was the zero dry time. I can brush it onto my bare nails and by the time I finish the second hand, the first is already completely dry and absorbed. There’s no tacky film or shine, so I don't have to put my day on hold while it sets. It uses Ulti-Plex technology to actually repair the keratin from the inside, and I really felt that difference. I followed the 'intensive' instructions, applying it twice a day for six days, and my nails felt significantly sturdier and less 'bendy.' I’ve now repurchased this three times because it’s my go-to 'reset' button between salon visits. If you’re struggling with peeling or post-gel brittleness, this is a total game-changer for getting your natural nails back to a healthy, growable length.

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. 💅✨

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!

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!

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.

I used to have beautiful, hard and attractive natural nails and thought they would always stay that way. Even when I went to the nail salons, I would bring my personal OPI products for them to use on my nails. However, I tired of the repeat visits because natural nail manicures didn’t stay on long and was envious of gel polish treatments that would keep up to 3 weeks or more, so I switched to gel manicures. It took awhile for my nails to break down but eventually they did and I wanted my nails of the past, strong and natural. I am a faithful OPI product user and went back to natural polish removers and applying Nail Envy or similar products designed for weak or brittle nails. When I saw this new OPI product I was delighted to try something that would aid in supporting my nail care, however I was disappointed to receive a bottle that although beautiful, was heavy and dark. At $25 dollars it is one their more expensive products to date and I like to see how much product I receive in the bottle and how long it last. The current design does not allow that and I would much rather have less esthetic value and more product for my money. If this Nail Repair Mode works I won’t complain, but if it doesn’t work I don’t think I can justify a replacement purchase at this high of a cost and a bottle design that hides the value for your dollar.

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.