Toenail Fungus: What Works, What Doesn't, and How to Cover It Now

Toenail fungus (onychomycosis) thickens, discolors and crumbles the nail, and it's stubborn because the nail shields the fungus from most treatments. A real plan does three things: protect and cover the nail (our undecylenic-acid press-ons), treat the surrounding skin so it doesn't spread (water-soluble tolnaftate spray and soak), and stay consistent to prevent reinfection.

Cover and Treat

Your 3-part plan

Cover the nail

Our antifungal Press-On Nails, powered by undecylenic acid, cover the damaged nail and protect it while it grows out so you look better today, not months from now.

Treat the skin.

Water-soluble tolnaftate Spray and Soak treat the surrounding skin and keep athlete's foot from feeding the problem.

Prevent reinfection.

Spray your shoes, soak weekly, and keep protecting the nail. Fungus comes back when you stop too soon, consistency is the whole game.

What it looks like,
and why it's so persistent

Here's why it keeps coming back: even after your skin clears, live spores are still sitting in your footwear, waiting for the next warm, daHere's the problem. The same nail plate that protects your toe also protects the fungus underneath it. Most treatments simply can't get through it, which is why toenail fungus is so slow to improve and so quick to come back. Beating it means working on three fronts at once.mp day. Treat the skin and you feel better. Treat the skin and the environment, and you actually break the cycle.

The complete fix

Dr. AntiFungus Press-On Toe Nails + Hand & Foot Spray Bundle

Toe Nails + Spray Bundle

Cover the nail with undecylenic-acid press-ons and treat the surrounding skin with water-soluble tolnaftate spray, the two-step toenail routine.

$71.09

$78.99
YOU SAVE $7.90
Hand & Foot Spray + Hand & Foot Soak Bundle

The Mani-Pedi Antifungal Care Kit

The complete system: Soak + Spray for the skin, antifungal press-ons for the nail. Everything to treat, protect, and prevent in one kit.

$62.09

$68.99
YOU SAVE $6.90
A close-up lifestyle shot of a doctor in a white coat holding a green clipboard, with a stethoscope around the neck and hands visible against a bright, blurred office background. A close-up lifestyle shot of a doctor in a white coat holding a green clipboard, with a stethoscope around the neck and hands visible against a bright, blurred office background.

When to see a doctor

If the nail is painful, spreading quickly, or you have diabetes or a condition that affects circulation or immunity, see a professional. Toenail fungus can require prescription care, and a podiatrist can confirm exactly what you're dealing with.

Frequently Asked Questions

What kills toenail fungus?

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Antifungal actives work by stopping fungus from growing, so a healthy nail can grow in to replace the damaged one. Because the nail shields the fungus, the most effective at-home approach is layered: cover and protect the nail with undecylenic-acid press-ons, treat the surrounding skin with water-soluble tolnaftate, and stay consistent to prevent reinfection. Stubborn or painful cases may need a prescription see a doctor.

What causes toenail fungus?

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The same fungi that cause athlete's foot. They get in through tiny cracks or a gap between the nail and the nail bed, and they thrive in the warm, damp, dark environment inside your shoes. Risk climbs with age, sweaty feet, shared wet floors, nail trauma, and salon tools that weren't properly sanitized.

Will it spread?

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Yes to your other nails, to the skin of your feet, and to other people through shared floors, towels and footwear. Treating the surrounding skin and preventing reinfection is how you stop the spread.