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Excellent 4.6 | 6737 reviews

Antifungal Pen (25% Undecylenic Acid)

Antifungal Pen (25% Undecylenic Acid)

$29.99 USD
$40.00 USD $29.99 USD
Offer ends today Sold out
  • Clearer nails in weeks
  • Easy and precise application
  • Clinically developed formula
  • All natural ingredients
Quantity
Only 4 pieces left!
  • Free UK Shipping
  • Easy Returns via Help Center
Photo client

In just 2 weeks, my toenails look much better. Works better than prescriptions, with no side effects.

Linda G. ★★★★★

90-Day Money Back Garantee

We’re confident you’ll love your results with Sanovia.

That’s why every order is backed by our 90-day money-back guarantee. If for any reason you’re not fully satisfied, simply return your product even if it’s been used and we’ll refund your purchase, no questions asked.

Your satisfaction, confidence, and comfort come first.

Shipping and returns

Once an order is placed, it takes about 48 hours to process. Delivery time depends on the shipping option chosen at checkout.

Standard shipping via USPS takes 3-5 business days, while expedited shipping through FedEx or UPS delivers in 1-2 business days. Sundays and holidays are excluded from delivery estimates. For more details, please refer to our shipping page.

We also offer a 90-day money-back guarantee. If you're not completely satisfied, you can request a full refund within 90 days of your order date. For more information, visit our returns page.

24/7 Customer Support

If you have any issues with your Sanovia™ products or order, contact us by phone or email and we'll make sure you're left satisfied.

Our email and phone number can be found in the footer of this website.

View full details

Treats most athlete’s foot for clearer, comfortable skin — no prescription needed.

Our doctor-formulated blend targets fungus at the root, restoring clear, healthy nails with lasting results.

Safe & Natural

Gentle formula without harsh side effects

Visible Results

Nails look clearer and healthier over time

Safe & Natural

Gentle formula without harsh side effects

Visible Results

Nails look clearer and healthier over time

Simple to Use

Easy pen applicator, no pills or complicated steps

Feel Comfortable

Enjoy healthy, clear nails with peace of mind

Simple to Use

Easy pen applicator, no pills or complicated steps

Feel Comfortable

Enjoy healthy, clear nails with peace of mind

When used properly, most OTC antifungal treatments show noticeable improvement within 4 weeks.

  • ★★★★★

    “After just two days, I started seeing real results! I’ve tried so many treatments before even eight months of prescribed medication but nothing worked until this. This pen is a lifesaver. I just ordered my second pack. Thank you! 😊”
    — Sarah

  • ★★★★★

    “This antifungal pen is so easy to use and totally mess-free. The 3-pack is perfect for home, bag, and work. Gentle yet powerful formula with tea tree oil, aloe, and vitamin E. Highly recommend!”

    — Emily

  • ★★★★★

    “This product exceeded my expectations! The packaging, clear instructions, and overall quality are amazing. The pens are super easy to use, completely mess-free, and even smell nice unlike other fungal treatments. Fantastic product!”

    — Laura

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Step Forward with Safe, Reliable Antifungal Care

25% Undecylenic Acid

Powered by 25% Undecylenic Acid - the maximum strength allowed without a prescription - our fo... read more

Powered by 25% Undecylenic Acid - the maximum strength allowed without a prescription - our formula is proven clinically effective to treat common fungal skin athlete's foot infections. This antifungal active ingredient helps relieve itching, burning, and irritation at the source, so you can step forward with comfort and confidence.

read less

Antifungal

Aloe Vera

Aloe vera helps soothe and hydrate the skin throughout treatment. While the antifungal fights ... read more

Aloe vera helps soothe and hydrate the skin throughout treatment. While the antifungal fights athlete’s foot and ringworm, this gentle moisturizer keeps your skin comfortable and nourished.

read less

Calms

Hydrates

Almond Oil

Almond oil helps moisturize and soften dry, rough skin around the affected area. It keeps the ... read more

Almond oil helps moisturize and soften dry, rough skin around the affected area. It keeps the skin comfortable and hydrated throughout antifungal treatment.

read less

Nourishes

Jojoba Oil

Jojoba oil helps moisturize and soften dry skin around the affected area. Its natural emollien... read more

Jojoba oil helps moisturize and soften dry skin around the affected area. Its natural emollient properties keep the skin comfortable and hydrated throughout treatment.

read less

Nourishes

Supports

Tea Tree Oil

Tea tree oil, a plant-based ingredient, is valued for its refreshing and skin-conditioning pro... read more

Tea tree oil, a plant-based ingredient, is valued for its refreshing and skin-conditioning properties. It helps keep the skin around the affected area clean, soothed, and comfortable during antifungal treatment.

read less

Refreshes

Conditions

Manuka Oil

Manuka oil helps moisturize and condition the skin around affected areas. Its natural properti... read more

Manuka oil helps moisturize and condition the skin around affected areas. Its natural properties support hydration and keep the skin comfortable during treatment.

read less

Cushions

Refreshes

Propolis Extract

Propolis extract helps condition the skin, keeping the area moisturized and comfortable during... read more

Propolis extract helps condition the skin, keeping the area moisturized and comfortable during antifungal treatment. With its natural soothing properties, it supports hydration and overall skin comfort.

read less

Reinforces

Softens

25% Undecylenic Acid

Powered by 25% Undecylenic Acid - the maximum strength allowed without a prescription - our fo... read more

Powered by 25% Undecylenic Acid - the maximum strength allowed without a prescription - our formula is proven clinically effective to treat common fungal skin athlete's foot infections. This antifungal active ingredient helps relieve itching, burning, and irritation at the source, so you can step forward with comfort and confidence.

read less

Antifungal

Aloe Vera

Aloe vera helps soothe and hydrate the skin throughout treatment. While the antifungal fights ... read more

Aloe vera helps soothe and hydrate the skin throughout treatment. While the antifungal fights athlete’s foot and ringworm, this gentle moisturizer keeps your skin comfortable and nourished.

read less

Calms

Hydrates

Almond Oil

Almond oil helps moisturize and soften dry, rough skin around the affected area. It keeps the ... read more

Almond oil helps moisturize and soften dry, rough skin around the affected area. It keeps the skin comfortable and hydrated throughout antifungal treatment.

read less

Nourishes

Jojoba Oil

Jojoba oil helps moisturize and soften dry skin around the affected area. Its natural emollien... read more

Jojoba oil helps moisturize and soften dry skin around the affected area. Its natural emollient properties keep the skin comfortable and hydrated throughout treatment.

read less

Nourishes

Supports

Tea Tree Oil

Tea tree oil, a plant-based ingredient, is valued for its refreshing and skin-conditioning pro... read more

Tea tree oil, a plant-based ingredient, is valued for its refreshing and skin-conditioning properties. It helps keep the skin around the affected area clean, soothed, and comfortable during antifungal treatment.

read less

Refreshes

Conditions

Manuka Oil

Manuka oil helps moisturize and condition the skin around affected areas. Its natural properti... read more

Manuka oil helps moisturize and condition the skin around affected areas. Its natural properties support hydration and keep the skin comfortable during treatment.

read less

Cushions

Refreshes

Propolis Extract

Propolis extract helps condition the skin, keeping the area moisturized and comfortable during... read more

Propolis extract helps condition the skin, keeping the area moisturized and comfortable during antifungal treatment. With its natural soothing properties, it supports hydration and overall skin comfort.

read less

Reinforces

Softens

Finally! An OTC solution that targets athlete’s foot and other common fungal skin issues.

For the treatment of most cases of athlete’s foot, jock itch, and ringworm. Apply twice daily for up to 4 weeks or as directed. Not for use on nails or scalp unless recommended by a healthcare professional.

Unlike messy creams, our formula uses a precision applicator for clean, targeted coverage delivering relief exactly where it’s needed.

- Targeted Application – Designed to reach hard-to-treat areas affected by athlete’s foot and ringworm.

- Symptom Relief Focus – Helps reduce itching, burning, and irritation when used consistently, promoting clearer, more comfortable skin.

- Hygiene-Oriented – Supports a drier, healthier skin environment that helps prevent fungal growth.

With consistent use and good daily habits, many users are finally regaining control over stubborn skin irritations.

Best of all? It takes less than 30 seconds a day.

Helps soothe itching, burning, and discomfort from athlete’s foot, promoting healthier, clearer skin over time.

The 4 Key Benefits Delivered by the Sanovia Fungus Treatment Pen

1. Start strong

Early, consistent use helps ease itching, burning, and discomfort linked to athlete’s foot and similar skin irritations.

  • Contains 25% undecylenic acid—an FDA-recognized active for treating most cases of athlete’s foot, ringworm, and jock itch.

  • Precision applicator enables clean, targeted coverage—supporting consistent use and symptom relief when used as directed.

  • With regular use, helps calm symptoms and supports clearer, healthier-looking skin over time.

2. Support Clearer, Healthier-Looking Skin

Dry, irritated skin can make hygiene routines harder.

  • Our formula features tea tree and oregano oils—plant-derived ingredients traditionally used to cleanse and refresh.

  • They help support a balanced, well-conditioned skin surface and a cleaner environment around affected areas.

  • With regular use, skin feels smoother, more comfortable, and better cared for.

3. Support Skin Hygiene in Challenging Environments

Shared spaces locker rooms, gyms, humid areas can be tough on skin.

  • Includes manuka and clove bud oils, botanical ingredients used for cleansing and conditioning.

  • Helps maintain a clean, balanced skin surface when paired with consistent antifungal care.

  • With regular use, supports comfort and hygiene in moisture-prone, high-friction spots.

4. Easy, Targeted Application for Skin Treatment

Our treatment pen is formulated with 25% undecylenic acid—the highest OTC strength plus a blend of plant-based oils, including propolis extract for skin-conditioning comfort.

The precision twist-pen applicator targets small or hard-to-reach areas, making your routine quick and convenient wherever you are.

“I finally stopped hiding my feet.”

Lucy’s journey, and why she trusts Sanovia

“For years I felt ashamed of my toenails. I tried everything, but nothing worked — until I discovered Sanovia. In just weeks, they became clearer, smoother, and healthier. I only wish I had found it sooner.”

Sanovia Antifungal Pen

Clean, easy, effective.

Say goodbye to spills and complicated routines. Our antifungal pen delivers a clean, stress-free experience every time.

  • Precision tip for clean, targeted use
  • No rubbing — just apply
  • Quick-dry, mess-free formula
  • Compact and travel-friendly

Nails you’ll be proud of !

The visible difference you’ve been waiting for

"For years I kept my nails hidden in closed shoes. After a few weeks with this pen, I noticed real changes! Clearer and smoother. Now I can finally wear sandals again without feeling embarrassed."

@Emily

I struggled with thick, yellow nails for years. After 3 months of using Sanovia daily, my nails are smooth, clear, and healthy again. The difference is unbelievable!

@Laura

"I had tried so many products with no luck. This one actually made a difference. My nails look healthier and cleaner than they have in years. I wish I’d found it sooner."

@Anna

"At first I was skeptical, but I started seeing improvements step by step. Today, my nails look completely different, and something I’m not ashamed of anymore."

@Karen

My toenails were damaged and yellow for ages. Sanovia cleared everything up in 3 months. Feels amazing to walk barefoot again!

@Mark

Backed by Results

Clinically Backed. Customer Approved.

Frequently Asked Questions

When will I start noticing changes in my skin?

When applied as directed to the skin around the nails, many customers notice relief from itching and irritation within the first weeks, though results may vary.

Can one pen be used on more than one toe or finger?

One pen can treat several affected areas, including the skin around multiple toes or fingers, depending on how often it’s used.

Does it help protect against future fungal infections?

Sanovia’s formula is made to treat common fungal skin infections such as athlete’s foot and ringworm. While it’s not designed for prevention, good hygiene and proper use can help support healthier skin.

How long does shipping usually take?

Orders are processed within 24–48 hours, with delivery in about 7-14 business days.

What results can I expect to see?

  • Soothes itching, burning, and irritation linked to athlete’s foot and ringworm
  • Helps keep the skin around affected areas comfortable and clean
  • Precise applicator makes consistent use simple
  • Enriched with botanicals to keep skin soft and smooth

With regular use as directed, many users notice relief from symptoms like itching or discomfort within 2–4 weeks. Ongoing use for several weeks may be needed for best results, and individual experiences may vary.

Is Sanovia free from harsh chemicals?

We use a monograph-compliant antifungal active (25% Undecylenic Acid) combined with skin-conditioning botanical oils. The formula is free from parabens, artificial dyes, and synthetic fragrances.

How many times a day should I use it?

Apply as directed on the label. Using it consistently is key for effective relief and treatment of conditions like athlete’s foot and ringworm.

Can it be applied to the skin around the nails?

Yes, the formula is designed for use on the skin around the nails and between the toes, but it is not meant to treat fungal infections of the nail itself.

Is Sanovia safe for sensitive skin?

Many users with sensitive skin tolerate the formula well thanks to its soothing botanical ingredients. However, since it contains a high concentration of Undecylenic Acid, we recommend doing a patch test before full use, especially if you have known sensitivities.

Can both men and women use it?

Yes, the antifungal formula is made for adults and can be used by both men and women to treat common fungal infections like athlete’s foot, ringworm, and jock itch. As with any OTC treatment, follow the label directions and consult a healthcare provider if you have sensitive skin or underlying conditions.

Can I add this to my current foot-care routine?

Yes, just apply the Sanovia pen after washing or soaking your feet. It fits easily into most foot-care routines.

Can you provide the complete list of ingredients?

Undecylenic Acid (25%), Tea Tree Oil, Oregano Oil, Manuka Oil, Clove Bud Oil, Propolis Extract, Tocopheryl Acetate (Vitamin E), plus other supporting ingredients for optimal penetration.

What happens if I stop using Sanovia?

For best results, continue using the product as directed for the full recommended treatment period even if symptoms improve sooner. Stopping early may reduce effectiveness.

Ready to tackle common fungal skin infections like athlete’s foot?

Experience our antifungal formula with 25% Undecylenic Acid backed by a 90-day satisfaction guarantee. Start today to support your skin’s comfort and hygiene.