Best Nail Fungus Products of 2026: How to Build the Right Nail Routine
Kerassentials and AppaNail compared: a topical oil and an inside-out supplement, and why many people use both.
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Toenail fungus is stubborn. According to MedlinePlus, from the NIH, nail fungus is hard to treat and it can take months for a healthy nail to grow out, so many people give up too early. The good news is that the right routine, used consistently, makes a big difference. We compared the two nail products our readers ask about most: one you apply, one you take.
Our Top Picks at a Glance
Topical Oil or Supplement?
A topical oil goes directly on the nail and the skin around it, where the fungus lives, which is why it is the first thing we recommend. A supplement supports the nail bed, skin and circulation from the inside, so the new nail grows in healthy. They do different jobs, and many people get the best results by using both.
Kerassentials
| Best for | Yellow, thick or smelly toenails and itchy skin around the nails |
| Format | Oil with brush, once a day |
| Key ingredients | Tea tree oil, undecylenic acid, lavender, lemongrass, vitamin E |
| Price | From $49/bottle |
| Guarantee | 60 days money-back |
Kerassentials is our number one because it puts proven natural ingredients right where they are needed. Tea tree oil and undecylenic acid, two of the most studied natural ingredients for nail fungus, are combined with lavender, lemongrass and nourishing oils, and you apply it in seconds with a brush after your shower. The 6-bottle package includes free shipping, 3 bonus guides and a surprise gift.
AppaNail
| Best for | Supporting nails and feet from the inside, alongside a topical oil |
| Format | Daily supplement |
| Key ingredients | Turmeric, berberine, olive leaf, vitamins C and D, pine bark + 17 nutrients |
| Price | From $49/bottle |
| Guarantee | 60 days money-back |
AppaNail is a daily supplement with 17 vitamins, minerals and herbs, including turmeric, berberine, olive leaf, pine bark and vitamins C and D, designed to support nails and feet from the inside. It does not replace a topical product for an active infection, but it is the perfect partner to Kerassentials for anyone who wants a complete inside-and-out routine.
The Complete Nail Routine
- Wash and dry your feet well every day, especially between the toes.
- Apply your nail oil to every affected nail and the skin around it.
- Take your nail supplement with breakfast, if you use one.
- Change socks daily and let your shoes dry out between uses.
- Keep going until a fully healthy nail has grown out, which takes months for toenails.
Nail Fungus Products FAQ
What is the best product for toenail fungus?
Our top pick is Kerassentials, a topical oil with tea tree oil and undecylenic acid.
Can I use Kerassentials and AppaNail together?
Yes. One works on the outside and the other from the inside, so many people combine them.
When should I see a doctor?
If the infection is painful, spreading, or if you have diabetes or poor circulation, see a doctor.
Where should I buy them?
Only on the official websites, to get the original formulas and the 60-day guarantees.
References
- MedlinePlus (NIH). Nail fungus.
- NCCIH (NIH). Tea Tree Oil.
About the author. Michael Thompson is a health and wellness writer who researches dietary supplements, their ingredients and the published science behind them.