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200,000+ Happy Customers
Excellent 4.9 | 8,741 Reviews
Save Up To 83% + 4 FREE Gifts
Excellent 4.9 | 8,741 Reviews
Anti-Fungal Pen - Save Up To 83% Today + 4 FREE Gifts
Clear stubborn fungus in as little as 4 weeks
First visible results in 2–3 weeks
Fraction of the cost of prescriptions
Penetrates the cuticle where fungus hides
25% Undecylenic Acid + natural botanicals
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Anti-Fungal Spray
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Anti-Fungal Spray
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Description
The Lunavia™ Anti-Fungal Pen is a precision-tipped treatment pen designed to deliver 25% Undecylenic Acid directly to the infected area — beneath the cuticle and surrounding skin where fungus actually lives. Unlike creams and sprays that sit on the surface, our formula uses a proprietary blend of natural oils to soften the skin barrier and carry the active ingredient deep into the problem zone. Formulated by Dr. Kent Biehler, a practicing podiatrist with over 30 years of experience treating stubborn fungal infections. Paraben-free. No synthetic fragrances. No harsh chemicals.
How to apply
Step 1
Wash the affected area with warm water and soap. Pat completely dry.
Step 2
Twist the base of the pen until the formula reaches the brush tip. (First use may require 10–20 twists to prime.)
Step 3
Brush a thin layer directly onto the affected area and along the cuticle line. Allow to absorb — no rubbing needed.
Step 4
Repeat morning and night for best results. One pen lasts approximately 2–3 weeks with daily use on multiple toes.
For best results, use consistently for the full recommended treatment period — even if symptoms improve early.
Ingredients
Active: 25% Undecylenic Acid
Inactive: Aloe Vera Extract, Sweet Almond Oil, Jojoba Oil, Tea Tree Oil, Manuka Oil, Clove Bud Oil, Lavender Oil, Oregano Oil, Peppermint Oil, Propolis Extract, Tocopheryl Acetate (Vitamin E).
Does it really work?
Undecylenic acid has been used in antifungal treatment for decades and is recognized as an effective OTC antifungal agent. Our formula delivers it at 25% concentration — the maximum strength available without a prescription — combined with Tea Tree Oil, Oregano Oil, and Manuka Oil, all of which have well-documented antifungal properties. Most customers report visible improvement within 4–6 weeks of consistent twice-daily use. Because healthy growth takes time to replace damaged areas, we recommend a minimum 8–12 week treatment course for full results.
What Is the 90-Day Guarantee?
We offer a risk-free
90-Day Money-Back Guarantee.
if you have not achieved any results after 12 weeks of use.
If you have not achieved any results after 12 weeks of consistent use — no questions asked. Simply contact our support team and we'll process your full refund.
AS SEEN ON
Podiatrist-Formulated. Clinically Proven Ingredients.
Formulated by Dr. Kent Biehler, Lunavia's Anti-Fungal Pen targets stubborn fungus beneath the cuticle through its proprietary blend of botanical oils and maximum-strength Undecylenic Acid — with just one daily swipe.
Formulated by Dr. Kent Biehler, Lunavia's Anti-Fungal Pen targets stubborn fungus beneath the cuticle through its proprietary blend of botanical oils and maximum-strength Undecylenic Acid — with just one daily swipe.
25% Undecylenic Acid
Maximum OTC-strength antifungal derived from castor oil. Disrupts fungal cell membranes on contact, stopping the infection at its source beneath the cuticle.
Tea Tree Oil + Oregano Oil
Two of nature's most powerful antimicrobial agents. They work together to soften the skin barrier, allowing the active formula to penetrate where topical creams can't reach.
Manuka Oil + Clove Bud Oil
Known for their deep antifungal and antiseptic properties. These oils target the fungus colony hiding underneath the cuticle while soothing the surrounding skin.
Propolis Extract + Vitamin E
Propolis provides a natural protective layer while Vitamin E promotes healthy skin regeneration — helping the treated area recover faster and look clearer sooner.
"Skeptical at first, but wow"
"I'd tried every cream and spray on the shelf. Nothing worked for years. This pen was different from day one — I could feel it actually getting underneath the skin. After 5 weeks, I saw clear, healthy growth coming in for the first time."
James R.
Verified Buyer
"Finally something that reaches the fungus"
"I'm a nurse and on my feet 12 hours a day. Fungus had been a nightmare for 3 years. The pen is so easy — twist, brush, done. By week 6 the thick, yellow discoloration was fading. I bought a 6-pack to finish the job."
Linda M.
Verified Buyer
"My wife noticed before I did"
"I've been hiding my feet in socks for years. Started using this pen morning and night like it says. About a month in my wife asked what I'd been doing because my toes looked so much better. That's when I knew it was working."
Mark T.
Verified Buyer
Get Visible Results in Less than 4 Weeks
Most customers see early improvement within weeks. For full clearance, we recommend a consistent 3-month treatment — while noticing progress along the way.
Week 1–2
The formula begins working beneath the cuticle. Odor fades. Itching and discomfort start to ease.
Week 4
Thick, discolored areas begin to soften. Healthy new growth becomes visible at the base.
Week 8
Clear, healthy growth is pushing through. Discoloration continues to fade. People start to notice.
Week 12
Full transformation. Healthy, clear growth has replaced the damaged area. Sandal season? Bring it on.
How We Compare
A smarter, safer, more affordable way to fight fungus.
PRESCRIPTIONS
Rx
OTC CREAMS
OTC
CREAMS
Reaches Under Cuticle
No Side Effects
No Prescription Needed
Affordable
Precision Application
Safe for Daily Use
90-Day Guarantee
What Our Customers Are Saying
Rated 4.9/5 by 200,000+ Happy Customers
Frequently Asked Questions
You got questions. We got answers.
Is the Lunavia pen safe for sensitive skin?
Yes. Our formula is free from parabens, synthetic fragrances, and harsh chemicals. The active ingredient — Undecylenic Acid — is derived from castor oil and has been used in foot care for decades. If you have very sensitive skin or a medical condition, we recommend checking with your doctor before use.
Can I use it on Athlete's Foot too?
Absolutely. The Lunavia pen is effective on Athlete's Foot, Jock Itch, and Ringworm — anywhere that fungal infections affect the skin. The precision applicator makes it easy to target affected areas between and around toes.
How long does one pen last?
It depends on how many areas you're treating. For most customers applying twice daily to several toes, one pen lasts about 2–3 weeks. That's why most people choose the 3 or 6-pack — to stay consistent through the full treatment course without running out.
Is this safe to use with diabetes?
Our formula uses gentle, natural ingredients and is generally well-tolerated. However, if you have diabetes or compromised circulation, we recommend consulting your healthcare provider before starting any new topical treatment.
Why does the pen need priming?
Each pen is vacuum-sealed to ensure freshness. On your first use, twist the base 10–20 times until the formula reaches the brush tip. After that, only 1–2 clicks are needed for each application. If no liquid appears after 30 twists, it's not empty — the pump just needs more priming. Contact us if you need help.
How long does shipping take?
Orders are processed within 24 hours. Standard shipping within the US takes 3–5 business days. Orders of 3+ pens ship FREE.
What if it doesn't work for me?
We stand behind our product with a 90-Day Money-Back Guarantee. If you haven't seen results after 12 weeks of consistent use, contact our support team for a full, no-questions-asked refund.
Can I cancel my order?
Yes — if you need to cancel, simply reach out to our support team before your order ships and we'll process it immediately. For subscription orders, you can cancel anytime with no penalties.
What payment methods do you accept?
We accept all major credit cards (Visa, Mastercard, American Express), PayPal, Apple Pay, and Google Pay.
