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Excellent 4.8 | 10,000+ Verified Buyers

Nailz Anti-Fungal Pen

Maximum Strength 25% Undecylenic Acid — targets fungal infections at the root. Precision brush applicator for clean, mess-free use in hard-to-reach areas.

OTC Max Strength 25% Undecylenic Acid
Treats most athlete’s foot cases
Precision brush — no mess, no touching
Botanically enhanced soothing oils
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Free ShippingTracked delivery to your door.
5–10 Day DeliveryAverage shipping window.
30-Day GuaranteeRisk-free trial & easy returns.
What is Nailz Anti-Fungal Pen?
Nailz Anti-Fungal Pen is a maximum-strength antifungal pen formulated with 25% Undecylenic Acid. It targets most athlete’s foot cases and helps eliminate fungal spores while supporting clearer-looking skin.
How fast does it work?
Starts working immediately on contact. Most users see visible improvement within 2–4 weeks of consistent daily use.
How to use?
1) Wash affected area with soap and warm water. Dry thoroughly.
2) Apply a thin layer twice daily (morning & night).
3) For athlete’s foot: pay close attention between toes.
4) Use daily for 4 weeks (athlete’s foot & ringworm) / 2 weeks (jock itch).
If symptoms persist, consult a doctor.
Key ingredients
Active: 25% Undecylenic Acid (maximum strength).
Botanicals: Tea Tree Oil, Clove Bud Oil, Jojoba Oil, Manuka Oil, Aloe Vera.
Shipping & returns
Typical delivery: 5–10 days. Secure checkout. Easy returns during guarantee window.
View full details
“This lowkey fixed my nail faster than the prescription cream I used last year… started showing results in like a week. How. Wild. Is. That??”
Reviewer photo
Harper W. – Florida
Verified Customer

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REAL PEOPLE. REAL STORIES. REAL RESULTS.

Before
BEFORE
After
AFTER

“After just a few weeks of using this pen, my nails looked healthier than ever… application is mess-free.”

David P, 36 Verified Customer
Before
BEFORE
After
AFTER

“I can finally wear open-toed shoes again without embarrassment.”

Amanda K, 41 Verified Customer

PROVEN BENEFITS. BACKED BY RESULTS.

Nailz formula has been clinically tested and researched for over 20 years, and was developed with the help of industry-leading experts.

93%
eliminated fungus and restored clear, healthy nails
95%
stopped reinfection and kept fungus away without odor
91%
noticed redness fade and discoloration disappear
90%
saw first results after 2 weeks of consistent use

Power of Science + Nature

Maximum-strength antifungal active + botanicals that soothe and support skin.

MAX STRENGTH
Undecylenic Acid (25%)
Kills fungus at the source and treats most cases of athlete’s foot.
PURIFYING
Tea Tree Oil
Powerful antifungal support and antiseptic defense.
DEFENSE
Clove Bud Oil
Adds antimicrobial protection while the active ingredient works.
RESTORE
Jojoba Oil
Moisturizes and restores dry, irritated skin.
SOOTHING
Manuka Oil
Calms the skin and supports recovery.
HYDRATION
Aloe Vera
Soothes irritation and supports clear-looking skin.
Deep penetration diagram

Deep Penetration Technology

Standard creams sit on top. Nailz Anti-Fungal Pen is designed to deliver the active ingredient precisely where fungus thrives.

  • Reaches hard-to-reach spaces (between toes, creases)
  • Targets the root of the infection
  • Less mess, less waste, better coverage
Real Results Timeline

CLINICALLY PROVEN RESULTS

In our clinical trial, 50 men and women with various backgrounds used Nailz daily for 120 days. Testing found that the formula can help reduce fungal spores and promote healthier-looking nail growth.

How did this translate into real-life results?

93% eliminated fungus and restored clear, healthy nails
95% stopped reinfection and kept fungus away without odor
91% noticed redness fade and discoloration disappear
90% saw first results after 2 weeks of consistent use

WHY CHOOSE Nailz Anti-Fungal Pen?

A maximum-strength antifungal pen with precision delivery — designed to outperform creams and slow alternatives.

NAILZ ANTI-FUNGAL PEN
See results in
2 WEEKS
Mess-free precision application
YES
Independent tested results
YES
Safe without side effects
YES
Clinical grade ingredients
YES
Effectiveness of delivery vs creams
30X
IN-CLINIC PROCEDURES
See results in
30 DAYS
Mess-free precision application
NO
Independent tested results
YES
Safe without side effects
YES
Clinical grade ingredients
YES
Effectiveness of delivery vs creams
30X
AT-HOME REMEDIES
See results in
3 MONTHS
Mess-free precision application
YES
Independent tested results
NO
Safe without side effects
YES
Clinical grade ingredients
NO
Effectiveness of delivery vs creams
3X
ALTERNATIVE PRODUCTS
See results in
3+ MONTHS
Mess-free precision application
FEW
Independent tested results
NO
Safe without side effects
FEW
Clinical grade ingredients
NO
Effectiveness of delivery vs creams
3X

FREQUENTLY ASKED QUESTIONS

Is Nailz Anti-Fungal Pen right for me?
Yes — it’s designed to treat most cases of athlete’s foot and fungal irritation in hard-to-reach areas.
Is it safe to use daily?
Use as directed. Apply a thin layer twice daily unless otherwise directed by a doctor.
How many pens should I order?
Most customers start with 1–2 pens depending on severity and area size.
What’s the best way to use it?
Wash & dry thoroughly → apply thin layer twice daily → keep feet dry → change socks/shoes daily.
What if it doesn’t work for me?
You’re covered by our guarantee. Contact support and we’ll guide you through the return.
What are the key ingredients?
25% Undecylenic Acid + Tea Tree, Clove Bud, Jojoba, Manuka Oil and Aloe Vera.

Shop with confidence

Fast support, secure checkout, and simple returns — everything you need to feel safe ordering today.

30-day guarantee
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5–10 day delivery
Tracked shipping.