The 2-Step Kit That Finally Reaches The Fungus Under Your Nail.
- ✓Works when creams, polishes & pens failed — because it opens the nail first
- ✓25% Undecylenic Acid — the strongest antifungal you can buy without a prescription
- ✓No pills. No blood tests. No $800 doctor visit. Just apply it twice a day.
- ✓See the yellow start fading in 2–4 weeks — before anyone else even notices
90 Days. Clear Progress, Or Your Money Back.
Use it daily for 90 days. If your nails aren’t visibly healthier — send it back, even empty. No receipts. No hassle. No questions. The risk is entirely on us.
Real Results from Real Customers
Still hiding your toes in socks?
You’ve tried the drugstore creams. The $40 oils from Amazon. Maybe even the prescription that came with a warning label. And the yellow still creeps back.
Here’s what nobody selling you creams will say: the fungus isn’t on your nail. It’s under it.
The fungus is protected by a layer of keratin so dense that topical antifungals can’t physically reach it. It’s like rubbing antibiotics on a cast and hoping they reach the broken bone underneath.
It doesn’t matter how strong the medicine is if it can’t get through the door. That’s the exact problem NailScience™ was built to solve.
The only kit that opens the nail first, then treats underneath.
Step 1 · Soften. A clinical-grade urea cream dissolves the thick, hardened top layer of the nail. This is the step 99% of products skip entirely—and it’s why they fail.
Step 2 · Penetrate. With the barrier now open, our 25% Undecylenic Acid pen delivers maximum-strength antifungal directly to the fungal colony living underneath.
The result? Medicine that finally gets where it needs to go. The yellow begins fading within weeks. New clear growth comes in at the base.
Sixty seconds. Twice a day.
Soften the barrier.
Clinical-grade urea dissolves the hard keratin top layer—the physical wall that blocks every other antifungal from working. This is the step drugstore creams skip.
Penetrate the infection.
With the door now open, 25% Undecylenic Acid + Tea Tree, Oregano, Manuka & Clove oils reach the fungus at its source—not just the surface.
Watch the yellow fade.
Most customers see yellowing soften within 2–4 weeks. New clear growth shows at the base by week 6–8. Full clearance in a few months—because that’s how fast nails grow. No brand can cheat biology.
This is what consistency looks like.
One kit. Four jobs no drugstore cream can do.
Most products hit a wall they can’t get through. The nail plate is dense keratin—essentially the same protein as your hair, but packed into a solid sheet. Topical antifungals simply can’t cross it.
NailScience™ is the only at-home system that solves this with a 2-step mechanism: clinical-grade urea to dissolve the barrier + 25% Undecylenic Acid to treat underneath.
That’s why customers who tried 3, 4, even 5 other brands tell us this was the first thing that worked.
You’re not the problem. The products are.
open toes · returning confidenceNot paid actors. Not filtered photos.
"Nothing worked like this pen. After 3 weeks the yellow color started fading — by month two my nail looked clear again."
"It dries fast, doesn't stain, and actually works. My nails finally look normal again."
"After a few weeks, the thick part of my nail started to grow out healthy. I'd almost given up."
Why this works.
“For 14 years I watched patients cycle through 3, 4, 5 different antifungal creams—and nothing worked. The reason was never the medicine. It was the delivery. Most brands use 10% Undecylenic Acid. We use 25%—maximum legal OTC strength—paired with clinical-grade urea to open the nail first. That one change is why NailScience™ works when everything else didn’t.”
18 Years In Private Practice
Why it works when the others don’t.
| NailScience | Prescription $400+ |
Drugstore $15 |
|
|---|---|---|---|
| Penetrates keratin barrier | ✓ | ✓ | ✗ |
| 25% Undecylenic Acid | ✓ | ✗ | ✗ |
| Urea softener included | ✓ | ✗ | ✗ |
| No pills, no side effects | ✓ | ✗ | ✓ |
| No prescription needed | ✓ | ✗ | ✓ |
| 90-day money back | ✓ | ✗ | ✗ |
| Cost per treatment | $29.95 | $400+ | $15 |
Stop hiding your toes.
Start the 2-step ritual.
200,000+ customers · 4.9 stars · 90-day guarantee · Free US shipping
Claim My Kit · Introductory →Honest answers.
How long until I see results?
Most women notice the yellowing start to fade around week 3–4. Visible clear growth at the base of the nail typically comes in by week 6–8. Full clarity — a new, healthy nail grown all the way out — is usually around 90 days for toenails and 60 days for fingernails. Nails grow slowly, so consistency matters more than time.
Will this actually work for me if nothing else has?
If drugstore creams, oils, or vinegar soaks didn’t work, it’s almost certainly because none of them actually reached the fungus. The nail plate is dense keratin — a solid wall topicals can’t cross. NailScience™ is the only at-home 2-step system that opens the barrier first with clinical-grade urea, then treats underneath with 25% Undecylenic Acid. That’s the difference customers tell us over and over: it actually got to the nail.
Is 25% Undecylenic Acid safe to use daily?
Yes. Undecylenic Acid is FDA-monographed for daily over-the-counter antifungal use. 25% is the clinical strength — higher than most drugstore products, but it’s still a naturally occurring fatty acid derived from castor oil, not a prescription drug. It’s been used safely since the 1940s. If you’re pregnant, nursing, or diabetic, please check with your doctor before starting any antifungal regimen.
How long does one kit last?
One kit lasts approximately 30 days when used twice daily on up to 5 affected nails. Most cases need the full 90-day protocol to grow out completely clear, which is why the 3-kit bundle is our most popular option — it covers the entire course at the lowest price-per-kit and locks in today’s introductory pricing.
How does this compare to prescription Jublia?
Jublia is efinaconazole, a prescription topical that runs around $600 a bottle without insurance and has mixed results because it still has to cross the nail plate on its own. NailScience takes a different approach: we soften the barrier first (Step 1), then deliver the active (Step 2). Same underlying problem, different path in. No prescription, no insurance battle, and a fraction of the cost.
Can I use it with nail polish?
Yes. Apply NailScience first and let it fully absorb and dry (about 90 seconds), then polish over it as normal. We do recommend giving your nails one polish-free day per week so you can track progress — watching the yellow fade is the most satisfying part of the protocol.
When does my order ship?
Orders ship same-day from our Ohio facility when placed before 2pm ET, or the next business day otherwise. US delivery is 3–5 business days via USPS Priority. You’ll receive a tracking number by email the moment your kit leaves the warehouse. Discreet packaging — no one will know what’s inside.
What if it doesn’t work for me?
We back every kit with a 90-day results guarantee. Use it as directed for the full 90 days. If your nails aren’t clearer and healthier, send back the empty kit and we’ll refund you in full — no questions, no restocking fee, no small print. The only condition is that you actually gave it the time to work.
Real stories. Real photos. Real results.
After 3 weeks the yellow color started fading, and by month two my nail looked clear again. I'd almost given up on this ever getting better. 58 years old and finally wearing sandals again.
After staying consistent for a few months, my nails don't scream 'fungus' anymore. I can see new healthy growth at the base. Worth every penny — I'd tried 4 other products first.
It dries fast, doesn't stain, and actually works. My nails finally look normal again. The twist-pen applicator is way easier than dropper bottles I've used before.
I’ll be honest — I almost gave up around week 4 because nothing was changing. Kept at it anyway and by month three the yellow is clearly fading from the base up. Wish the shift had started sooner, but I’m 56 and this is the first thing that’s done anything, so I’ll take it. Docking a star for the patience it takes.
The tea tree & oregano smell threw me off the first few days — it’s pretty medicinal out of the cap. But by week 6 my husband noticed my toes looked different, which was a shock because I hadn’t even told him I was using anything. Would be 5 stars if the scent was toned down. 64 and back in flip-flops at the pool.
Being honest here — it worked really well on my big toe (pretty much clear now at month 3) but two of my smaller nails haven’t changed much yet. Maybe those are just tougher cases. I do think this is the only thing that’s actually shown me any real progress, so I’m sticking with it. 62 y/o, hopeful but realistic.
The sandals can come back out.
200,000+ customers · 4.9 stars · 90-day guarantee.
The risk is 100% on us. Your only job: apply it twice a day, and let biology do the rest.