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Yellow Nails
Yellow
Nails
Brittle
Brittle &
Crumbly
Itchiness
Itchy
Skin
Bad Odor
Bad
Odor
Thick Nails
Thick
Build-up
4.8/5 based on 12,000+ Results
HEAL RESISTANT FUNGUS NATURALLY

Stop Surface Treating. Eradicate Nail Fungus Where It Lives.

  • Penetrates UNDER the nail where fungus actually hides
  • Visible improvement in as little as 2 weeks
  • No pills, no liver risks – safe topical formula
Quantity
⏱️

One pen lasts 2-3 weeks. 73% of customers choose the 3-pack for full results.

WARNING: Low Stock Notice
This product sold out 12 times this year. We encourage you to take advantage of the limited sale and buy now.
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Nulsi Customer Transformations

Before and after transformation feet
“I was embarrassed to wear sandals because of my nails. This treatment made a huge difference — the discoloration faded, and my nails finally look normal again. I feel confident showing my feet now.”
— James, USA
Before and after transformation toenails
“I had yellow, brittle toenails that just wouldn’t clear up no matter what I tried. After using this for a few weeks, I can actually see new healthy nail growing in. It’s the first thing that really worked for me.”
— Sophie, Switzerland
Before and after transformation fungus recovery
“I'd dealt with nail fungus for years and didn’t think anything would help. After consistent use, my nails are smooth, clear, and strong again. It honestly feels amazing to see that transformation.”
— Laura, UK
* OUR RETURN POLICY IS SIMPLE, HEALTHY NAILS WILL RETURN!* * OUR RETURN POLICY IS SIMPLE, HEALTHY NAILS WILL RETURN!* * OUR RETURN POLICY IS SIMPLE, HEALTHY NAILS WILL RETURN!* * OUR RETURN POLICY IS SIMPLE, HEALTHY NAILS WILL RETURN!* * OUR RETURN POLICY IS SIMPLE, HEALTHY NAILS WILL RETURN!* * OUR RETURN POLICY IS SIMPLE, HEALTHY NAILS WILL RETURN!* * OUR RETURN POLICY IS SIMPLE, HEALTHY NAILS WILL RETURN!* * OUR RETURN POLICY IS SIMPLE, HEALTHY NAILS WILL RETURN!* * OUR RETURN POLICY IS SIMPLE, HEALTHY NAILS WILL RETURN!* * OUR RETURN POLICY IS SIMPLE, HEALTHY NAILS WILL RETURN!*

Target Fungus at the Source
Restores Clarity & Health

NO SURGERY. NO HARSH PILLS. JUST RESULTS.

Prescription medications can be harsh on your system, and standard creams often fail because they sit on the surface. Fungus lives deep under the nail bed, where most treatments can't reach.

Our precision applicator is engineered to penetrate the hard nail plate, delivering high-potency active ingredients directly to the infection. It stops the spread and promotes clear, healthy regrowth from day one.

  • Deep Penetration Formula
  • Visible Improvement in 4-6 Weeks
  • Safe, Painless & Easy to Apply

Our customers tell it better than we do

Excellent 4.8 / 5 5 Stars
5 Stars
"I struggled with ugly toenails for years"

I tried everything... finally Nulsi Nail Fungus delivered! Had to be patient but it definitely paid off.

5 Stars
"Podiatrists couldn't believe how fast my nails improved"

Don't waste time with other products or medication like I did... I've tried countless creams, polishes, and medications, but they only masked why this pen finally helped me get rid of the root cause.

5 Stars
"No more hiding my feet"

No more hiding my feet! I thought I'd be stuck hiding my feet forever. But finally wearing sandals again after years :)

Clinical Results
After 90 Days

In an independent third-party study, participants applying the treatment twice daily demonstrated significant improvements across all key metrics of nail health.

noticed a visible reduction in yellowing and discoloration.
experienced softer, smoother nail texture after treatment.
showed clear, healthy regrowth from the nail base.
reported no recurrence of fungus after consistent daily use.
Customer using Swiss Biolabs pen
"I tried everything - finally, Nulsi delivered!"
Patricia B., 47, New York, NY

Precision Application, Zero Mess

Say goodbye to spills, sticky creams, and complicated routines. Our Swiss-engineered applicator is designed for maximum efficiency.

  • Targeted Brush Tip: Delivers the formula exactly where it's needed, deep into the nail bed.
  • Instant Absorption: No rubbing required. Just apply and go about your day.
  • Quick-Drying Formula: Dries in seconds so you can put on socks immediately.
  • Travel-Friendly Design: Compact, leak-proof pen fits easily in any bag.

Frequently Asked Questions

When used as directed on the skin around the nails, many customers report relief 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.
Yes. Our formula is intended for use on the skin around the nails and between the toes, as directed. It is not intended to treat fungal infections of the nail itself.
  • Relief from itching, burning, and irritation caused by athlete's foot and ringworm
  • Support for skin comfort and hygiene around affected areas
  • Easy, targeted application for consistent use
  • Includes moisturizing botanicals to help maintain soft, smooth skin
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.
Orders usually ship within 24-48 hours, and delivery typically takes 3-5 business days (domestic).

Smarter Care for
Healthy, Clear Nails

Powerful, clinically-supported formula you can trust to target the root cause and restore natural clarity.

  • Precision applicator for targeted treatment
  • Visible results in weeks, not months
  • Painless, mess-free daily application
Swiss Biolabs Precision Applicator