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4.9/5 Excellent | Based on 2,000+ Reviews

Kill Nail Fungus at the Root — Not Just the Surface

Fungus lives under the nail and around the nail bed — where creams can’t reach. This pen delivers 25% Undecylenic Acid right where it matters.

🦠 Targets fungus beneath the nail — where creams can’t reach
🚫 Stops yellowing, thickening & crumbling at the source
🖊️ Precision pen application — fast, clean, targeted
🛡️ 90-day money-back guarantee — risk-free to try

*Most customers see improvement in 2–6 weeks ; full healthy nail regrowth can take longer.

Worldwide shipping
Worldwide shipping
90-Day Money-Back Guarantee
90-Day Money-Back
Guarantee
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"3 years of fungus gone in 8 weeks. I've tried EVERYTHING. This is the only thing that worked."

Sarah K. Verified Purchase Verified Icon
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"After 6 months of hiding my feet, I can finally wear sandals again. This stuff actually works!"

Nicole R. Verified Purchase Verified Icon
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"The thick, yellow nails are GONE. I can't believe something so simple actually worked."

Cathrine S. Verified Purchase Verified Icon

Experience targeted nail health support with CLINQ Labs™ Antifungal Pen, formulated to address nail fungus, discoloration, thickening, brittleness, and nail bed irritation at the source.

Powered by a concentrated antifungal blend, this precision formula helps reduce fungal buildup beneath the nail and around the cuticle — areas where fungus commonly starts and spreads. By supporting a healthier nail environment, it promotes clearer-looking nails and improved nail texture over time.

The easy-to-use pen format allows for direct, mess-free application exactly where it’s needed, helping the active ingredients penetrate the nail and surrounding skin more effectively than traditional creams.

With consistent daily use, users report visibly clearer nails, less thickening and crumbling, reduced discomfort, and renewed confidence showing their hands and feet.

  • No Harsh Chemicals
  • No Fillers or Artificial Dyes
  • Lightweight, Non-Greasy Formula
  • Safe for Daily Use

Step 1: Clean and dry the affected nail thoroughly. Trim the nail if needed to allow better access to the nail surface.

Step 2: Twist the pen and apply a thin layer of the solution directly onto the nail, nail edges, and cuticle area.

Step 3: Allow the formula to absorb completely. Do not rinse. Let it dry for a few minutes before putting on socks or shoes.

Use twice daily for best results. Many users begin noticing improved nail clarity and texture within weeks, with continued improvement over time.

Results after 30 days of use

Reported visibly clearer nail appearance: +92%

Noticed reduced yellowing and discoloration: +89%

Experienced less nail thickening and crumbling: +87%

Reported improved comfort around the nail and cuticle: +90%

* Based on an independent customer survey. Individual results may vary.

Active Ingredient

Undecylenic Acid (25%)
A clinically studied antifungal ingredient commonly used in OTC treatments. Helps inhibit fungal growth on the skin and nails by creating an environment where fungus cannot thrive. Targets nail fungus at its source to support clearer, healthier-looking nails over time.

Inactive Ingredients (Supportive & Conditioning Blend)

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)

Formulation Standards

  • 25% Undecylenic Acid (OTC Antifungal)
  • OTC Approved Active Ingredient
  • GMP Certified Manufacturing
  • Clinically Studied Active
  • No Water Fillers
  • Designed for Daily Topical Use

All orders are processed and shipped within 1–2 business days (Monday–Friday).

Your order is sent via our express courier service, which includes door-to-door tracking for full visibility.

Average delivery time: 5–10 business days, depending on location.

We want you to feel completely confident in your purchase. If our product doesn’t meet your expectations for any reason, you’re fully protected by our 90-day risk-free guarantee.

Simply email us at INFO@CLINQ-LABS.COM within 90 days of delivery, and we’ll help you with a full refund — no stress, no hassle.

Your satisfaction always comes first.

View full details

Why Nail Fungus Symptoms Are All Connected

If you’re dealing with more than one of these issues — yellow discoloration, thickened nails, crumbling edges, nail lifting, or irritation around the nail — your body is signaling an underlying fungal imbalance that surface treatments often fail to address.

CLINQ Labs Customer Transformations

James R., 42

Jenny R., 42

"I've tried everything for toenail fungus — sprays, creams, even prescriptions. Nothing worked like this pen. After a few weeks with Clinq Labs, the yellow color started fading, and by month two my nail looked clear again. Easy to use and no smell — I'm impressed."

Verified Customer

Olivia C., 36

Nathan C., 36

"I'm on my feet all day in work boots, so fungus has been a nightmare. The Clinq Labs pen fit right into my daily routine. It dries fast, doesn't stain, and actually works. My nails finally look normal again."

Verified Customer

William D., 59

William D., 59

"I was skeptical at first, but this pen really works. After a few weeks, the thick part of my nail started to grow out healthy. My wife noticed before I did! Highly recommend for any guy dealing with this."

Verified Customer

Just twist and apply. Twice a day.

We're committed to creating effective solutions that actually deliver results. In a recent customer feedback survey, hundreds of men using the CLINQ Labs™ Antifungal Pen shared how their nails looked and felt after consistent use. The results speak for themselves:

  • 92% said their nails looked clearer and healthier
  • 94% noticed a major reduction in discoloration
  • 95% reported smoother nails and improved confidence

The Missing Piece:

Targeted antifungal care — addressing fungal growth beneath the nail that drives discoloration, thickening, brittleness, irritation, and recurrence.

Treating the surface alone isn’t a real solution.

By targeting the under-nail environment where fungus thrives, you support healthier nail regrowth over time — so your nails can recover naturally instead of cycling through temporary fixes.

Try CL™ Antifungal Pen Risk-Free
90-day guarantee
90-Day Money-Back Guarantee
CLINQ LABS™ Reviews
⭐ Verified Customer Reviews
4.9
Based on 2,000+ Reviews
5 ★
88%
4 ★
8%
3 ★
3%
2 ★
1%
1 ★
0%
92% report clearer nails
89% would recommend
All reviews verified
MT
Michael T.
Verified Purchase
· Feb 2026
"Skeptic turned believer — the 25% formula is actually different"
I've been burned by so many "maximum strength" products that were just 1% stuff in different packaging. The 25% undecylenic acid here is genuinely different. The pen applicator also gets under the nail edge where fungus actually lives — something creams can never do. Nails noticeably clearer after 5 weeks. Ordered a second pen already.
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NR
Nicole R.
Verified Purchase
· Mar 2026
"After 6 months of hiding my feet, I can finally wear sandals again"
Pool parties, beach trips, even flip flops to the grocery store — I avoided all of it. The precision tip gets right under the nail edge which makes all the difference. No mess, works where everything else failed. Attaching my progress photos because I know how skeptical people are.
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RP
Robert P.
Verified Purchase
· Jan 2026
"My gym locker room embarrassment is finally over"
Used to change shoes in a bathroom stall to avoid anyone seeing my feet at the gym. Used this twice a day for 8 weeks. The nail stopped crumbling completely by week 2, discoloration started fading by week 4. Back to the locker room like a normal person. Small thing, but it matters more than I can explain.
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CS
Catherine S.
Verified Purchase
· Feb 2026
"The thick, yellow nails are GONE. Can't believe something this simple worked."
My big toenail was so thick I thought it was permanent damage. My podiatrist wanted to remove the nail entirely — tried this first as a last resort. Discoloration started fading around week 3. At week 10 my nail looks almost completely normal. Attaching before/after because I know how skeptical I was.
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DW
David W.
Verified Purchase
· Dec 2025
"25 years of nail fungus. This is the only thing that ever worked."
I'm 57 years old and have had fungal nails since my 30s. Tried oral medications that made me sick, expensive laser treatments, every OTC product on the market. Was genuinely resigned to just having ugly nails forever. My daughter bought me this as a gift. At 6 weeks the nail texture started smoothing. At 3 months I have the clearest nails in decades. Ordered 4 more pens.
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Showing 6 of 2,000+ verified reviews

Why People Love Our Antifungal Pen

Frequently Asked Questions

How long until I see improvements in my skin?

When used as directed on the skin around the nails, many customers report reilef from symptoms like itching and irritation within the first few weeks. Individual experiences may vary.

How much product do I get in each pen?

One pen can be used to treat multiple affected areas of the skin, including the skin around multiple toes or fingers, depending on usage frequency.

What’s the standard shipping time?

Orders usually ship within 24-48 hours, and delivery typically takes 5–10 business days.

What benefits can I expect?

  • Relief from itching, burning, and irritation caused by athlete's foot and ringworm
  • Support for skin comfort and hygeine around affected areas
  • Easy, targeted application for consistent use
  • Includes moisturizing botanicals to help maintain soft, smooth skin

Is it suitable for men and women?

Yes. Our antifungal formula is designed for adult use and may be used by both men and women to treat common fungal infections like athlete's foot, ringworm, and jock itch. As with any OTC drug, follow label directions and consult a healthcare provider if you have sensitive skin or underlying conditions.

What if I stop using CLINQ?

For best results, it's important to use the product as directed for the full recommended treatment period - even if symptoms improve earlier. Stopping too soon may reduce the effectiveness of the treatment.

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If you don't see results in 90 days, we'll refund you

Step 1: Document your progress
Take a clear photo of your nails before starting treatment, then photograph the same nail(s) throughout the 90 days. You’ll notice gradual improvements — less discoloration, smoother texture, and new healthy growth from the base.
Step 2: Apply daily
Use the pen twice a day, morning and night. Apply directly to the affected nail and surrounding skin. Consistency is crucial — skipping days can let the fungus return beneath the nail surface.
Step 3: Stay consistent for 90 days
Commit to at least 90 days of daily use for best results. Most users see visible improvement within 4–6 weeks, while full nail renewal typically takes 3–6 months, depending on nail growth speed.
*When paired with consistent use.