FunGuard™ Antifungal Treatment Pen

FunGuard™ Antifungal Treatment Pen

  4.7 | 29,335+ Happy Customers

Eliminate fungal infections, Stop itch embarrassing odor.

✅ Kill fungus where it hides.
✅ No more scratching and itching, regain your confidence.
✅ Break the “it always comes back” cycle.
✅ Precise, no-mess care you’ll actually use.
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FunGuard™ Antifungal Treatment Pen

FunGuard™ Antifungal Treatment Pen

$35.95
$35.95 $49.95
SAVE 28% Sold out

  • I ordered this after my podiatrist recommended I treat my toes for fungus around and under a couple of my toes. After I received it and cleaned my feet real good I used the FunGuard Pen (real easy to apply) per instructions and within a week I no longer notice fungas at all on my toes. This stuff really does work. Highly recommend if you have fungas or you are a diabetic that gets dry skin build up under toes nails...USE THIS PRODUCT..

    Maya O.

  • I waited to give a review for this nail pen until I had used it long enough. I can confirm that this is a valid treatment for nail fungus as it has provided great results for me. You have to use it consistently as the directions describe for it to work but you will get results for the effort.

    Richard T.

  • I was skeptical but hopeful when I decided to order this. I had been having an issue with both of my big toes' nails for some time. I didn't feel it urgent enough to see a doctor so was pleased to find this to try.
    I have seen a great improvement in a short time! This is a good product. No, I will not show photos, but I wouldn't say this if I didn't see a change for the better.
    Thank you for having this available!

    Aria K.

    You’re not “dirty.” You’re stuck in a cycle.

    Fungus thrives in the exact places you live in every day: warm shoes, sweaty socks, gym floors, tight toe spaces. And most people stop too soon—because the routine is annoying.

    Why most fixes fail:

    • Moisture + heat = repeat flare-ups
    • Shoes can re-trigger it even after a shower
    • Creams are messy, so you skip days
    • You only treat the “surface”… not the hotspots (between toes / around nail edges)

    If you want it to stop coming back, the routine has to be effortless.

    Most treatments aren’t “bad”… they’re just hard to stick with.

    This pen is built for precision + consistency—the two things that matter most when you’re targeting stubborn problem areas.

    What makes it different:

    • Swipe-on precision right where fungus hides (between toes, around nail edges)
    • Fast-drying, no-grease formula (no slippery feet, no ruined socks)
    • Clean application—no messy hands, no thick cream layer
    • Made for real life: gym bag, travel, work, anywhere

    When it’s easy to use daily, you finally stay consistent—so results can actually show.

    A precision-tip pen delivers 25% undecylenic acid (+ Tea Tree Oil & Oregano Oil) directly to affected skin areas to help treat common fungal issues—fast, targeted, and easy to stay consistent with.

    How to use

    1. Wash and fully dry the area (especially between toes).
    2. Swipe the pen directly onto the problem spots.
    3. Let it dry for a moment. Done.

    Use daily as part of your routine—like brushing your teeth.

    What to expect

    • First days: feels cleaner, less itch/irritation for many people
    • 1–2 weeks: odor and discomfort often improve with consistency
    • Nails: visible improvement takes longer—stay consistent (nails grow slowly)

    Tip: If you’re active or in shoes all day, consistency matters even more.

    No greasy rubbing, no waiting around—just apply, let it dry, and move on. Consistency becomes effortless, which is what most people miss.

    Anyone dealing with fungal discomfort or embarrassing-looking skin around toes/groin/hands—especially if you’ve quit treatments because they were messy or annoying.

    Yes. Made for topical use. Use as directed, avoid eyes.

    • Free delivery
    • Ships in 24-48 hours.
    • Delivery in 4 to 8 working days

    That's how confident we are in your results. But if you're not thrilled, send it back and we'll refund your purchase.

    We've received reports of unauthorized stores deceiving customers with counterfeit products. To ensure you're getting an authentic piece, only purchase from our official website.

    We are actively pursuing legal action to shut down these stores and protect our customers. Rest assured that we are committed to safeguarding your interests and ensuring you receive genuine SYLK products.

    View full details

    100% Natural Ingredients

    Undecylenic Acid (25%)

    Our OTC antifungal active designed to help treat common fungal conditions on skin. Targets the... read more

    Our OTC antifungal active designed to help treat common fungal conditions on skin. Targets the root cause so you can feel clean, comfortable, and confident again.

    read less

    ANTI-FUNGAL

    TARGETED

    FAST-ACTING

    OTC ACTIVE

    Tea Tree Oil

    A classic botanical known for its fresh, clean feel. Helps support a calmer, less “angry” skin... read more

    A classic botanical known for its fresh, clean feel. Helps support a calmer, less “angry” skin experience—especially when irritation makes you want to scratch.

    read less

    FRESH FEEL

    COMFORTING

    BOTANICAL

    SOOTHING

    Oregano Oil

    A powerful botanical support ingredient that helps reinforce the “clean skin” feeling and supp... read more

    A powerful botanical support ingredient that helps reinforce the “clean skin” feeling and supports a routine you’ll actually stick with.

    read less

    BOTANICAL SUPPORT

    CLEAN FEEL

    DAILY ROUTINE

    CONFIDENCE

    Manuka Oil

    Known for comforting, skin-supporting properties. Helps reduce the “raw/irritated” feeling so ... read more

    Known for comforting, skin-supporting properties. Helps reduce the “raw/irritated” feeling so your skin feels more normal again.

    read less

    COMFORTING

    SKIN SUPPORT

    CALMING

    REPAIR FEEL

    Jojoba Oil

    A skin-friendly oil that helps soften and comfort dry-looking skin, making daily use feel easi... read more

    A skin-friendly oil that helps soften and comfort dry-looking skin, making daily use feel easier and more pleasant.

    read less

    SOFTENING

    COMFORT

    SKIN-FRIENDLY

    DAILY USE

    Undecylenic Acid (25%)

    Our OTC antifungal active designed to help treat common fungal conditions on skin. Targets the... read more

    Our OTC antifungal active designed to help treat common fungal conditions on skin. Targets the root cause so you can feel clean, comfortable, and confident again.

    read less

    ANTI-FUNGAL

    TARGETED

    FAST-ACTING

    OTC ACTIVE

    Tea Tree Oil

    A classic botanical known for its fresh, clean feel. Helps support a calmer, less “angry” skin... read more

    A classic botanical known for its fresh, clean feel. Helps support a calmer, less “angry” skin experience—especially when irritation makes you want to scratch.

    read less

    FRESH FEEL

    COMFORTING

    BOTANICAL

    SOOTHING

    Oregano Oil

    A powerful botanical support ingredient that helps reinforce the “clean skin” feeling and supp... read more

    A powerful botanical support ingredient that helps reinforce the “clean skin” feeling and supports a routine you’ll actually stick with.

    read less

    BOTANICAL SUPPORT

    CLEAN FEEL

    DAILY ROUTINE

    CONFIDENCE

    Manuka Oil

    Known for comforting, skin-supporting properties. Helps reduce the “raw/irritated” feeling so ... read more

    Known for comforting, skin-supporting properties. Helps reduce the “raw/irritated” feeling so your skin feels more normal again.

    read less

    COMFORTING

    SKIN SUPPORT

    CALMING

    REPAIR FEEL

    Jojoba Oil

    A skin-friendly oil that helps soften and comfort dry-looking skin, making daily use feel easi... read more

    A skin-friendly oil that helps soften and comfort dry-looking skin, making daily use feel easier and more pleasant.

    read less

    SOFTENING

    COMFORT

    SKIN-FRIENDLY

    DAILY USE

    Quickly Visible Results

    93%

    said they felt cleaner & more confident.

    90%

    said itching/irritation felt noticeably calmer.

    89%

    said it was the easiest routine to stick to.

    91%

    noticed a visible reduction in nail discoloration.

    • Natural Ingredient

    • Itch relief you can feel fast

    • Odor control that lasts through shoes

    • Targets the problem spots creams miss

    • Clearer-looking nails over time

    • Healthier-looking skin

    • A routine you’ll actually stick to

    • Natural Ingredient

    • Itch relief you can feel fast

    • Odor control that lasts through shoes

    • Targets the problem spots creams miss

    • Clearer-looking nails over time

    • Healthier-looking skin

    • A routine you’ll actually stick to

    • Natural Ingredient

    • Itch relief you can feel fast

    • Odor control that lasts through shoes

    • Targets the problem spots creams miss

    • Clearer-looking nails over time

    • Healthier-looking skin

    • A routine you’ll actually stick to

    • Natural Ingredient

    • Itch relief you can feel fast

    • Odor control that lasts through shoes

    • Targets the problem spots creams miss

    • Clearer-looking nails over time

    • Healthier-looking skin

    • A routine you’ll actually stick to

    Real People, Real Results

    • I stopped hiding my feet.

      I used to avoid sandals and literally angle my feet away in photos. After a couple weeks of consistent use, I finally felt comfortable again. Huge confidence boost.

      Megan P., 34

    • This is the first routine I didn’t quit.

      Creams were messy so I’d stop… and it would come right back. The pen makes it stupid-easy. It feels like I’m finally staying ahead of it.

      Ashley V., 41

    • Work boots destroyed my feet.

      I’m in boots all day and my feet felt gross no matter what. This dries fast, no grease, and I can use it without making a mess. I feel clean again.

      Brandon T., 29

    • I didn’t want meds—this felt safer.

      I didn’t want to take anything oral. I wanted something topical that I could control. This fit perfectly into my routine and helped calm the problem areas.

      Denise A., 52

      Stop Hiding Your Feet Again

      Fungus isn’t just physical — it messes with your confidence. One simple swipe a day helps you feel clean, comfortable, and ready for sandals again.

      Break The Come-Back Cycle

      Most ‘fixes’ fade because the problem returns from the same places — toes, nails, shoes. Target the hotspots consistently and stop restarting from zero.

      Built For Sweat, Shoes, And Gym

      Real life = heat, moisture, tight shoes. This pen is designed to be used anywhere — quick, precise, and not messy.

      Targeted Relief Without Taking Pills

      If you hate the idea of oral treatments, go topical. Direct application helps treat common fungal issues while giving you peace of mind.

      Still have questions? Check here

      FAQ

      It’s formulated with 25% undecylenic acid, an OTC antifungal active used to help treat athlete’s foot, jock itch, and ringworm (tinea, incl. tinea manuum).

      Yes—apply to the skin around the nail and surrounding areas as directed.

      Many people notice comfort/clean-feeling improvements quickly, but consistent daily use matters—skin issues improve faster than nail appearance changes.

      Designed to be no-mess and fast-drying compared with typical creams. Let it dry fully before socks/shoes.

      No. But if you’re sensitive, patch-test first.

      Apply to clean, dry affected areas consistently (daily routine). Consistency is the biggest difference between “temporary” and “finally under control.”

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