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Nail-Aid Biotin Ultimate Strength is a concentrated nail treatment enriched with vitamin B7 to strengthen and repair weak, peeling nails. Delivering visible improvements in as little as 3 days, it dries instantly to an anti-chip finish and can be used alone or as a base and top coat to extend polish wear. This cruelty-free, non-toxic formula is a must-have for professionals seeking durable, healthy nails with minimal effort.





| ASIN | B01DG10XA6 |
| Best Sellers Rank | #4,562 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #6 in Cuticle Oils |
| Brand | Nail-Aid |
| Brand Name | Nail-Aid |
| Customer Reviews | 4.3 out of 5 stars 14,306 Reviews |
| Item Form | Liquid |
| Item Height | 5.5 inches |
| Item Weight | 2.4 Ounces |
| Liquid Volume | 0.55 Fluid Ounces |
| Manufacturer | ANISE COSMETICS, LLC |
| Number of Items | 1 |
| Specialty | Cruelty Free, Formaldehyde Free, Fragrance Free, Non-Toxic, Strengthener |
| UPC | 839186088737 |
K**C
MUST BUY! This nail strengthener is THE TRUTH!
This stuff is THE TRUTH! I don't often leave reviews unless I'm seriously blown away by a product or it's shockingly bad lol. I suffer from iron deficiency anemia and had been rehabilitating my once indestructible nails. With this product they're finally getting back to their former glory. Not only does it keep my nails strong but flexible, I find that it keeps my polish on for 14+ DAYS when used as a base coat. After a polish change, I oil my bare nails consistently for a day or so (I like hard as hoof and bliss kiss nail oil or cnd solar, but any deeply penetrating oil should work). Before my next polish change, I moisturize my hands and nails thoroughly, wash my hands with dawn dishsoap to dehydrate and remove the excess oils from nails. Then, I typically apply 2 coats of this as base polish, let dry, followed by two coats of color and a fast dry top coat. It's been several months without any nail breaks!
K**E
Nail-Aid Biotin Ultimate Strength - Treatment & Strengthener Review
In the diverse world of nail care, Nail-Aid Biotin Ultimate Strength stands out as a gem. This concentrated treatment, enriched with nail-strengthening biotin, works wonders for fortifying soft, torn nails and putting an end to peeling and breaking. The quick-dry formula ensures a long-lasting finish, allowing you to flaunt smoother, harder, and longer nails in just three days. One of the standout features of this product is its versatility. You can use it alone by applying two coats over clean, dry nails or as a base and top coat with nail color for added protection. Many users have praised its effectiveness in promoting nail growth and strength, making it a go-to solution for brittle nails that need a boost. Customers have particularly appreciated how this product strikes a balance between being like an oil and feeling like lotion, providing adequate moisture without leaving a greasy residue. While some users have noted minor issues with chipping, the overall consensus remains positive, with many experiencing visible improvements in nail health and strength. For those seeking a reliable nail treatment that delivers on its promises, Nail-Aid Biotin Ultimate Strength is a top contender. Its ability to nurture and strengthen nails, coupled with quick results, makes it a valuable addition to any nail care routine. So, if you're looking to transform your nails and bid adieu to brittleness, this product could be your new best friend! 🌟
T**R
Stronger nails, flaky polish
I have been using this for about a week and a half. I do think my nails are getting stronger, but I do find it to be flaky within a day or two after application. Technically the instructions say to remove and reapply every few days, but if you’re not able to do that then it gets flaky.
L**S
A Game-Changer
Nail-Aid Biotin Ultimate Strength – A Game-Changer for Fragile Nails Hey everyone! I’ve been using this nail strengthener for the past seven months, and I have to admit—I was skeptical at first. But it truly works. For years, I struggled with one fingernail and one toenail that split right down the center. They’d snag on clothing and other surfaces, which was both annoying and painful. Since I started using this polish, the improvement has been remarkable. My nails feel stronger and healthier, and I now apply it to all my fingernails. A few tips from my experience: 1. Avoid using polish remover too often—it can undo the progress. 2. Instead, keep layering the strengthener over the existing coat for a couple of weeks. 3. When you do remove it, be sure to wash your hands before applying a fresh layer. This product has made a real difference for me. If you’re dealing with brittle or splitting nails, it’s definitely worth a try.
J**A
I would definitely buy it again.
Excellent product. Since I started using this hardener my nails are stronger and no longer break easily. It is easily applied and dries quickly. Highly recommended.
S**U
Has Some Big Issues
Update: I'm now a little more than halfway through the bottle and it has gotten so thick that it's impossible to brush it on smoothly, no matter what I do. It's just... Gloopy. Plus, I've been really struggling to pick up enough of it on the brush because the brush only reaches halfway down the bottle even with the lid completely screwed on. I remember seeing another reviewer mention this but I thought to myself at the time that I would never get that far into the bottle, but here I am a few months later, probably because it goes on so dang thick! Unsurprisingly, this gloopiness certainly does not help with the extra slow drying time. I now have an alternate option on the way and it can't get here soon enough! Original review: every time I apply this stuff it takes forever to dry and still remains tacky for an hour or more afterwards. I've made sure to keep the coats as thin as possible but that doesn't seem to matter. It's especially difficult to apply 2 coats as instructed when starting with bare nails because I have to wait so long in between them. However, some people say that this polish dries really quickly for them, so I'm wondering if not all of the batches of polish are the same. Beyond that, I do like how glossy this polish is and how wide the brush is. Since I use this by itself it does take a couple of coats before you can really tell that there's polish on my nails though.
A**F
Amazing
So much better than other brands. Does not peel off and helps build nail strength
M**A
Flakes 3 days in so don't be alarmed. GREAT for fixing dip/gel damage.
This stuff is amazing! My nails were getting very thin from my stylist filing down my nails too much to get the dip and gel off. I just bought this on Prime Day (just over a week ago) and I can already notice a difference. My nails that were thin, are definitely stronger. My nails are growing out faster and where they are growing in, they are thicker than before as well. If you decide to give your nails a break from gel/dip, definitely look into getting this for that break. If you just use this, it will flake off around 3 days in but that's because your nail essentially sucked out all of the good stuff on the bad parts of your nail. I was amazed to see the difference it made.
ا**!
جربته ترا مو مره واو يعني بستمر واشوف
A**R
Great product helped my nails recover fully after having 4 months of acrylic nails which ruined them. This repaired and helped my nails grow delighted!
A**N
No cumple con lo que dice, 2 semanas usándolo y las uñas están igual ,ni endurece ni crecen más fuerte Para mi todo un engaño
S**O
I have very brittle soft nails that don’t grow very well. I ordered 2 of the bottles of Nail Aid Biotin Ultimate Strength nail treatment and as this is the second day I have used it I don’t have a real sense of trying it out. It goes on very well and the 2 coats did seem to have made my nails less bendable. The nails have a high gloss which looks great and I have to put a second application of 2 coats on in 1 day after using a polish remover and cleaning the nails. This is the first time I have felt comfortable that this product will work as no other nail strengtheners have done so.
M**S
Resultados inmediatos protege y endurece las uñas
Trustpilot
1 month ago
2 months ago