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GFOUK™ Antifungal Pen

GFOUK™ Antifungal Pen

 (13646 Reviews)

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

🛡️ 180-day money-back guarantee — risk-free to try

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

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Regular price $25.97
Regular price $25.97 Sale price $49.97
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GFOUK™ Antifungal Pen

GFOUK™ Antifungal Pen

Regular price $25.97
Regular price $25.97 Sale price $49.97
SAVE 48% Sold out

  • files/34_a4a7edca-5db1-4e3e-91c2-f58b19b2ee0c.png

    "The thick, yellow nails are GONE. I can't believe something so simple actually worked."

    Cathrine S.Verified Purchase
  • files/35_4024f4bb-a6d3-44a2-86bb-3d99aa1ba6e1.png

    "After 3 months of hiding my feet, I can finally wear sandals again. This stuff actually works!"

    Nicole R.Verified Purchase
  • files/33_fe5530b1-fdeb-42b8-b1f8-40731bee81eb.png

    "3 years of fungus gone in 8 weeks. I've tried EVERYTHING. This is the only thing that worked."

    Sarah K.Verified Purchase

    Experience targeted nail health support with GFOUK™ 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.

    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.

    • Edges begin to crack, crumble, or break even with light pressure.

    • Your nails start turning yellow or cloudy, no matter how clean or trimmed they are.

    • Your nails gradually thicken and become harder to cut or manage.

    • Your nail starts lifting or separating from the nail bed.

    • You avoid showing your hands or feet because of how your nails look.

    • The infection slowly spreads to nearby nails over time.

    • You treat it temporarily, but the fungus keeps coming back again.

    • You’re treating the symptoms — but the underlying fungal problem remains.

    • Skin around the nail becomes irritated, tender, or inflamed.

      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 GFOUK™ Antifungal Pen Risk-Free
      90-day guarantee
      180-Day Money-Back Guarantee

      Restore Clear, Healthy Nails — Fast

      Say goodbye to thick, discolored, brittle toenails.
      The GFOUK™ Antifungal Pen uses a dermatologist-trusted formula that targets fungus at the root for visible results in weeks.
      No foot soaks, no pills — just fast, convenient healing.

      Precision Root Treatment

      • A Natural Formula You Can Trust
      • Precision antifungal pen with 25% Undecylenic Acid – kills fungus at the source for strong, beautiful nails.
      • Pure. Natural. Effective.

      How To Use

      Start with clean, dry nails.

      Twist the bottom of the pen to dispense the serum, then apply it directly onto the nail surface and surrounding skin.

      For best results, use once in the morning and once before bed daily.

      • 🦠 Kills Fungus Fast

        Our formula includes 25% Undecylenic Acid and Tea Tree Oil to destroy fungus at the source. Results often start within 1–2 weeks.

      • ✨ Restores Nail Clarity & Strength

        Fades yellow discoloration, smooths brittle texture, and promotes healthy new growth— so you can wear open-toe shoes again with confidence.

      • 😊 Clean, Simple, Precise

        No spills, no harsh smells, and no hassle. Just twist, apply, and go—twice a day for maximum results.

        Our product is recommended by many influencers.

          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.

          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.

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

          • 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

          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.

          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.

          180-days money-back guarantee

          We offer a 180-days money-back guarantee,allowing you to try our product with complete peace ofmind.If,for any reason,you are not satisfied with your purchase within 180 days,simply contact usand we'll issue a full refund,no questions asked.