🧪 Maximum-Strength 25% Undecylenic Acid💧 Penetrates The Keratin Plate, Not Just The Surface⏱️ Dries In Under 60 Seconds🖊️ One-Way Valve Pen With A Sterile Brush🛡️ 90-Day Money-Back Guarantee🧪 Maximum-Strength 25% Undecylenic Acid💧 Penetrates The Keratin Plate, Not Just The Surface⏱️ Dries In Under 60 Seconds🖊️ One-Way Valve Pen With A Sterile Brush🛡️ 90-Day Money-Back Guarantee🧪 Maximum-Strength 25% Undecylenic Acid💧 Penetrates The Keratin Plate, Not Just The Surface⏱️ Dries In Under 60 Seconds🖊️ One-Way Valve Pen With A Sterile Brush🛡️ 90-Day Money-Back Guarantee🧪 Maximum-Strength 25% Undecylenic Acid💧 Penetrates The Keratin Plate, Not Just The Surface⏱️ Dries In Under 60 Seconds🖊️ One-Way Valve Pen With A Sterile Brush🛡️ 90-Day Money-Back Guarantee🧪 Maximum-Strength 25% Undecylenic Acid💧 Penetrates The Keratin Plate, Not Just The Surface⏱️ Dries In Under 60 Seconds🖊️ One-Way Valve Pen With A Sterile Brush🛡️ 90-Day Money-Back Guarantee🧪 Maximum-Strength 25% Undecylenic Acid💧 Penetrates The Keratin Plate, Not Just The Surface⏱️ Dries In Under 60 Seconds🖊️ One-Way Valve Pen With A Sterile Brush🛡️ 90-Day Money-Back Guarantee
From Thick, Discolored, Stubborn-Looking Nails to Clearer, Healthier-Looking Nails
25% Undecylenic AcidPenetrates The KeratinDries In Under 60s
Penetrates the Keratin Plate to Reach Below the Surface, Where Sprays Evaporate
A Lipophilic Vitamin E Carrier Absorbs Into the Nail's Micro-Channels
Propolis Helps Break Down the Biofilm That Shields the Fungus
Dries in Under 60 Seconds, With a Mess-Free One-Way Valve Pen
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"Most nail treatments fail for one reason: they never reach the fungus. Water-based liquids sit on top of the keratin plate and evaporate, and a biofilm shields the colony underneath. What I like about this pen is the approach. A lipophilic, oil-based vehicle carries a strong 25% undecylenic acid active into the nail's micro-channels, while propolis helps break down that protective biofilm. It dries fast, the one-way valve keeps it sanitary, and it is easy to stay consistent with twice-daily use. For an at-home option on mild to moderate cases it is well thought out. For a painful, spreading or diabetic nail, always see a professional."
Dr. Marcus Feld, DPMPodiatrist, 18+ Years in Practice
NOVALYS
Others
Penetrates the Keratin Plate + Biofilm
An oil-based system built to reach below the surface. Water-based liquids evaporate on top.
Maximum-Strength 25% Undecylenic Acid
The highest concentration available without a prescription. Many pens use weaker actives.
Dries in Under 60 Seconds, No Mess
A precise, fast-drying dose. Others are greasy, slow or drip everywhere.
One-Way Valve Pen + Sterile Brush
Spores cannot travel back into the reservoir. Open bottles re-contaminate with every use.
IngredientRole
Undecylenic Acid (25%)A recognized topical antifungal active, at the highest strength available without a prescription.
Tocopheryl Acetate (Vitamin E)A lipophilic carrier chemically matched to keratin, helping the formula absorb into the nail instead of evaporating on top.
Propolis ExtractA bee-derived resin studied for helping break down the microbial biofilm that shields the fungus.
Lipophilic (Oil-Based) VehicleOil-based rather than water-based, engineered for penetration through the nail plate.
Product Description
The Novalys Antifungal Nail Pen is a maximum-strength topical antifungal in a lipophilic (oil-based) vehicle, engineered to pass the keratin barrier where water-based formulas evaporate. Twist, brush on, and let it absorb.
Nail problems are stubborn for a reason: the active has to get past the hard keratin plate and a biofilm that shields the fungus underneath. Most surface liquids never do.
This pen pairs 25% undecylenic acid (the highest concentration available without a prescription) with a Vitamin E lipid carrier that absorbs into the nail's micro-channels, and propolis to help break down the biofilm.
A one-way valve pen with a sterile brush keeps it clean, and it dries in under 60 seconds. For clearer, healthier-looking nails with twice-daily use. For external use only.
How to Use
Step 1: Wash and thoroughly dry the affected nail and the skin around it.
Step 2: Twist the base of the pen to release a precise dose. The one-way valve stops anything traveling back up.
Step 3: Brush the liquid onto the nail plate, into the cuticles and under the free edge.
Step 4: Wait about 60 seconds for it to absorb before socks or shoes.
Routine: Apply twice daily, morning and night. Nails grow slowly, so stay consistent for several weeks to months as the healthier nail grows out.
How It Works
Nails resist treatment because of three barriers: the hard keratin plate, a protective biofilm, and formulas that evaporate before they penetrate. This pen is built for all three.
Lipophilic delivery. An oil-based Vitamin E carrier is chemically matched to keratin, so it absorbs into the nail's micro-channels instead of sitting on top.
Biofilm disruption. Propolis helps break down the biofilm that shields the fungal colony, so the active can make contact.
A strong antifungal active. 25% undecylenic acid is the highest concentration available without a prescription.
Fast and sanitary. It dries in under 60 seconds, and the one-way valve pen keeps spores out of the reservoir between uses.
Used consistently twice a day, it supports clearer, healthier-looking nails as they grow out.
Ingredients & Safety
Active: 25% Undecylenic Acid. Delivery: Tocopheryl Acetate (Vitamin E) lipid carrier. Biofilm support: Propolis Extract. All in a lipophilic, oil-based vehicle.
Safety: For external use on nails and the surrounding skin only. Avoid broken or irritated skin, and keep away from the eyes and mouth. Patch test first if your skin is sensitive. Keep out of reach of children.
Please note: This is an over-the-counter topical antifungal, not a prescription treatment. Nail results take time and depend on a healthier nail growing out, and this is not a substitute for medical care. If you have diabetes, poor circulation, or a painful, spreading or worsening nail, see a doctor or podiatrist.
90-Day Money-Back Guarantee : Not seeing clearer, healthier-looking nails? Contact our team for a full refund.
Don't take our word for it.
Real stories from people who love how much clearer and healthier their nails look after sticking with the Novalys Antifungal Nail Pen.
4.8/5
Trusted by 50,000+ customers
Robert M.
Verified
"The big toe had been thick and yellow for years. Sprays did nothing, they just evaporated on top. This one actually soaks in, and as the nail grows out the new part is coming in clearer. Slow but real, and no mess."
Susan T.
Verified
"I had it on two fingernails and was so self-conscious. The little brush lets me get right under the edge, it dries in seconds so I can carry on, and month by month the nails look healthier. I finally stopped hiding my hands."
James K.
Verified
"Years at the gym left me with a stubborn toenail. I like that the pen is sealed so nothing gets back in, and it dries before I even put my socks on. The nail is clearer than it has been in a long time."
Linda P.
Verified
"I tried a prescription lacquer that cost a fortune and was a pain to file down. This is far easier: twist, brush, done, twice a day. My nail is slowly clearing and my wallet is happier."
Michael R.
Verified
"I was skeptical of another nail product. What sold me is that it is oil-based, so it actually gets into the nail instead of sitting on top. A few months in, the new growth looks clean. Consistency is key, but it works if you keep at it."
Patricia G.
Verified
"My toenail was thick and discolored and I was tired of hiding it under polish. This has almost no smell, dries fast, and the nail looks clearer and less thick as it grows. I actually wore sandals this summer."
David L.
Verified
"The pen is perfect for travel, no bottle to spill, and the valve keeps it clean. I apply it morning and night without thinking about it. My nail is steadily looking better, which is more than I can say for the sprays I wasted money on."
Carol S.
Verified
"Let me be honest, this is not overnight magic. Nails grow slowly, so it took a couple of months before the clear new nail really showed. But it soaks in, it does not sting, and the improvement is real. Stick with it."
George H.
Verified
"At my age, fiddly treatments are a pain. This one is simple: twist the base, brush it on, sixty seconds and I am done. No gloves, no mess. My toenail looks the best it has in years."
Individual results may vary. Reviews reflect personal experiences. Nail results build gradually as the healthier nail grows out.
Before & After: Thick & Discolored vs. Clearer-Looking.
Drag the slider. On the left, a thick, discolored, damaged-looking toenail. On the right, the same toe after months of consistent use of the Novalys Antifungal Nail Pen: a clearer, healthier-looking nail growing in.
No pills. No filing. No mess. A lipophilic formula carries 25% undecylenic acid into the nail's micro-channels, propolis helps break down the biofilm, and it dries in under 60 seconds.
Results build gradually as the healthier nail grows out, so consistency matters. For external use. Results vary from person to person.
BeforeAfter
Drag the slider to see the difference
Three Steps. Twice a Day.
No pills, no filing, no mess. Just clean, brush on, and let it dry.
1Step One
Start clean and dry
Wash the affected nail and the skin around it, then dry thoroughly. A dry nail helps the formula absorb.
2Step Two
Twist and brush it on
Twist the base to release a precise dose, then brush it onto the nail plate, the cuticles and under the free edge.
3Step Three
Let it dry in 60 seconds
Give it about a minute to absorb before socks or shoes. No residue, and the one-way valve keeps the pen sanitary between uses.
Pro tip: Consistency beats intensity. Apply morning and night, and keep going as the nail grows, since that new growth is where you will see the clearer nail. Trim and lightly file the top of the nail so more of the formula can absorb.
25%
Undecylenic acid, the highest concentration available without a prescription.
<60s
Dries in under a minute, so you can put on socks and shoes right away.
2x day
A simple twice-daily routine with a precise, mess-free applicator.
3-in-1
One pen: a strong antifungal active, a penetrating carrier and a biofilm-breaker.
Undecylenic Acid + Vitamin E Penetrate, Disrupt, Support
The Novalys Antifungal Nail Pen is built for the three barriers that make nails so stubborn. A lipophilic, oil-based vehicle carries 25% undecylenic acid, the strongest available without a prescription, into the keratin's micro-channels instead of evaporating on top. Propolis helps break down the biofilm that shields the fungus, while vitamin E conditions the surrounding skin. It dries in under 60 seconds, the one-way valve keeps it sanitary, and twice-daily use supports clearer, healthier-looking nails as they grow out.
Undecylenic acid is an over-the-counter topical antifungal active. This is not a prescription treatment or a substitute for medical care. Nail results build gradually and vary from person to person. See a doctor or podiatrist for a painful, spreading or worsening nail, or if you have diabetes or circulation problems.
What's inside the pen?
The Antifungal Active
25% Undecylenic Acid
A fatty acid derived from castor oil and the highest-strength antifungal active available over the counter, it targets the fungus at the source.
The Lipid Carrier
Tocopheryl Acetate (Vitamin E)
An oil-soluble vitamin that helps carry the active through the dense keratin of the nail while conditioning the skin around it.
The Biofilm Breaker
Propolis Extract
A resin collected by bees, studied for helping break down the stubborn biofilm that shields fungus from ordinary treatments.
The Delivery System
Lipophilic Oil Base
An oil-based vehicle that soaks into the nail's micro-channels instead of evaporating on the surface like watery sprays.
Active ingredient: Undecylenic Acid 25%. Other ingredients: Caprylic/Capric Triglyceride, Tocopheryl Acetate (Vitamin E), Propolis Extract, Melaleuca Alternifolia (Tea Tree) Leaf Oil, Isopropyl Myristate, Tocopherol. Free of: No parabens, no artificial dyes, no added fragrance. Cruelty-free. For external use on nails and the surrounding skin only. Keep away from eyes. If you have diabetes, poor circulation, or a painful or spreading nail, see a doctor or podiatrist.
Why every treatment you tried never reached it
1
The nail plate is dense, layered keratin. Most sprays and creams cannot get through it, so the active never reaches the fungus living underneath.
The Keratin Barrier
2
Fungus builds a protective biofilm, a microscopic shield that ordinary treatments simply sit on top of instead of breaking through.
The Biofilm Shield
3
Water and alcohol based formulas evaporate in seconds, leaving almost no active behind to do the actual work.
The Evaporation Problem
✓
The Novalys pen is oil-based. It carries 25% undecylenic acid into the keratin's micro-channels while propolis helps break down the biofilm. It stays, it soaks in, it reaches the problem.
The Lipophilic Answer
The Science of Getting Through the Nail
Nail fungus is stubborn because most treatments never reach it. This pen is built around three things: a strong active, a carrier that gets it in, and a biofilm breaker.
The Active
25% Undecylenic Acid
Highest strength available without a prescription
A castor-oil-derived fatty acid recognized as an over-the-counter antifungal active, dosed at the strongest concentration you can buy without a prescription.
25%maximum OTC concentration
The Carrier
A Lipophilic, Oil-Based Vehicle
Vitamin E supports penetration and conditions skin
The nail plate is dense keratin. An oil-based vehicle helps carry the active into its micro-channels instead of evaporating on top like a watery spray.
Oilbased, so it soaks in and stays
The Biofilm Breaker
Propolis Extract
Studied for disrupting protective biofilm
Fungus hides behind a biofilm shield. Propolis has been studied for helping break down that biofilm so the active can do its work rather than sit on the surface.
Biofilmdisruption support
No Prescription. No Compromise.
No Prescription Needed
No Pills or Tablets
No Filing the Nail Down
Dries in Under 60 Seconds
Mess-Free One-Way Valve
Essentially Odor-Free
Cruelty-Free
90-Day Money-Back Guarantee
The Difference
Why This Pen?
Most nail products force a trade-off. Watery sprays evaporate in seconds. Creams sit on top of the nail. Prescriptions are costly and often mean filing the nail down. This pen is different. An oil-based formula carries 25% undecylenic acid, the strongest available without a prescription, into the nail, while propolis helps break down the biofilm. It dries in under 60 seconds, the one-way valve keeps it clean, and it is backed by a 90-day guarantee. Clearer, healthier-looking nails, without the hassle.
It is an over-the-counter antifungal pen with 25% undecylenic acid, the highest strength available without a prescription. You twist the base and brush it onto the nail twice a day. The oil-based formula soaks in to help target the fungus and support clearer, healthier-looking nails as they grow out.
How soon will I see results?
Nails grow slowly, so this takes patience. Most people start to notice clearer new growth after several weeks to a few months of consistent twice-daily use. The improvement appears from the base of the nail as the healthier nail grows out.
How do I use it?
Wash and dry the nail, twist the base of the pen to release the formula, then brush it onto the nail plate, the cuticles and under the free edge. Let it dry about 60 seconds. Use morning and night. Lightly filing the top of the nail first helps it absorb.
Does it smell or leave a mess?
No. It dries in under a minute, leaves no sticky residue, and the one-way valve keeps the applicator clean and sanitary between uses. The formula is essentially odor-free, so you can apply it and get on with your day.
Is this a prescription treatment?
No. It is an over-the-counter topical built around undecylenic acid, a recognized OTC antifungal active. It is not a prescription medication or a substitute for medical care. For a painful, spreading or severe nail, or if you have diabetes or circulation problems, see a doctor or podiatrist.
Can I use it on fingernails and toenails?
Yes, it works on both. Toenails are denser and grow more slowly than fingernails, so they usually take longer to show clearer new growth. Consistency matters more than speed on either.
Can I wear nail polish with it?
For best absorption, apply it to a clean, polish-free nail. Polish forms a barrier that keeps the formula from reaching the nail, so if you can, let the nail breathe while you use the pen consistently.
Who should not use it?
Avoid it if you are allergic to undecylenic acid, propolis or bee products. If you are pregnant, nursing, diabetic, or have circulation issues or a painful nail, talk to a doctor or podiatrist first. For external use only, and keep it away from the eyes.
How long does one pen last?
One pen typically covers several weeks of twice-daily use on one or two nails. Because nail improvement builds over months, many people choose a 2 or 3 pen bundle to see it through and save.
What if it does not work for me?
You are covered by our 90-day money-back guarantee. If you are not happy with your results, contact our support team for a refund, no hassle.
90-Day Money Back Guarantee
Secure payments
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Fast & free delivery
Dispatched within 24–48 hours, delivered in 5–8 working days.
60-day trial
Not satisfied? Return within 60 days for a full refund.
Before
After
