Nail Evidence ReviewKerassentials Reviews for Toenail Fungus: What the Evidence Actually Shows
Does Kerassentials work for toenail fungus? Our verdict
Kerassentials is a topical nail and skin care oil with no published clinical trial behind it as a toenail fungus treatment. One ingredient, tea tree oil, has a small trial; the rest of the case rests on lab work or general skin-care use. It may suit someone with a mild, confirmed problem who wants a low-commitment cosmetic routine and accepts the uncertainty. It is not a substitute for prescription treatment of a moderate or severe infection.
What is Kerassentials?
Kerassentials is a topical oil marketed for nail and skin health. The official sales page says to apply it to the nail bed daily after showering. It is sold through ClickBank in multi-bottle bundles. Product images show a 0.5 oz (15 ml) glass bottle with a brush applicator, branded Nature's Nutriwave and described as a "Doctor Formulated Blend For Healthy Skin and Nails."
The sales page names no legal entity or manufacturing address beyond the brand itself. The label states one concentration, 5% undecylenic acid. Without the others, nobody outside the company can compare the formula with the doses used in research.
How we reviewed it: we read the sales page and disclaimers, then checked its ingredients and promises against dermatology guidance and published studies. We have not run a hands-on trial of the product, and we do not publish invented user stories. Our editorial policy explains the process.
What are the Kerassentials ingredients, and is there evidence for them?
The sales page highlights eight ingredients, while a product label image lists 17. Formulas can vary between versions, so check the label on any bottle you receive.
| Ingredient | Likely role | Evidence for toenail fungus |
|---|---|---|
| Undecylenic acid (5%) | Antifungal for skin | FDA's OTC rules cover skin infections at 10–25% undecylenate and require athlete's foot products to state they are not effective on the scalp or nails. This label lists 5%. |
| Tea tree oil | Antifungal candidate | Small studies only. The strongest ingredient on the list, and still unproven. |
| Menthol, camphor | Cooling, scent | The AAD says mentholated ointments have only small studies so far. |
| Lemongrass, lavender, clove bud, manuka oils | Fragrance, antifungal candidates | A targeted literature search found no controlled human trial of these oils in nail fungus. |
| Mineral oil, almond, flaxseed, canola, walnut, jojoba, chia oils | Carriers, moisturizers | Skin conditioning. Not antifungal treatments. |
| Aloe vera leaf extract | Soothing | Skin conditioning. Not an established nail fungus treatment. |
| Tocopheryl acetate (vitamin E) | Antioxidant, conditioning | Cosmetic role only. |
See the full Kerassentials ingredient breakdown for detail on tea tree oil and undecylenic acid.
Do the Kerassentials sales claims match the evidence?
| Sales page says | What we found |
|---|---|
| Fights fungus, including "strong fungus" | No published trial of the product. Its own disclaimer says it is not intended to treat or cure any disease. |
| New healthy pink nails within the first weeks | The AAD says full nail regrowth can take a year or longer. |
| Backed by 29 scientific references | The references are about ingredients. The page does not show that any of them tested the finished Kerassentials oil. |
| "Proven efficacy" | The proof offered is a set of before-and-after photos. We found no published study behind the claim. |
| "Safe and effective" | The same image carries the disclaimer that the product is not intended to diagnose, treat, cure, or prevent any disease. |
| "The only complete formula" | A marketing phrase with no stated comparison or test. |
| "Doctor formulated" | The product images do not name the doctor, and an image of a person in a white coat tells you nothing about who made the formula. |
| "GMP-Certified" | The images show a badge but name no certifying body we could check. Non-GMO and Made in the USA badges are also unverified. |
| "No chemicals" | The label lists mineral oil and menthol, and every ingredient is a chemical. Natural oils can still irritate or sensitize skin. |
How to read the before-and-after photos
Marketing images show four unnamed users with discolored nails "before" and clear nails "after." We have chosen not to reproduce them, because nothing shows who these people are, whether a lab confirmed fungus, how long they used the oil, or whether they used anything else. Skin tone and lighting also differ noticeably between some before and after shots, which makes a fair comparison impossible. Without those details, the photos cannot show that the product caused the change.
Can you trust Kerassentials customer reviews?
Search for this product and you will mostly find sponsored articles, press releases, and affiliate pages. Figures such as "14,000 reviews" or "4.7 stars" tend to repeat across those pages with no way to trace them to real purchases. We do not repeat those numbers as fact, and we do not publish testimonials we cannot verify.
Even genuine reviews have a built-in problem. Nail changes can be caused by psoriasis or injury rather than fungus, so a reviewer may never have had an infection. An oil can also make a dry nail look better without clearing anything underneath. When you read a review, look for three things: a lab-confirmed diagnosis, photos taken over many months, and a verified purchase.
How does Kerassentials compare with proven toenail fungus treatments?
Toenail fungus lives in and under the nail, which makes it hard for anything applied to the surface to reach. Even approved treatments have modest cure rates, which is worth knowing before you judge any product by its promises. Figures below come from a 2019 review in the Journal of Clinical and Aesthetic Dermatology.
Complete cure rate for toenail fungus
| Option | Complete cure | Typical course | Notes |
|---|---|---|---|
| Oral terbinafine | 38% in the approval study | 12 weeks | Prescription. Needs liver testing. |
| Efinaconazole | 15.2–17.8% | About 48 weeks, daily | Prescription topical. |
| Tavaborole | 6–10% | About 48 weeks, daily | Prescription topical. |
| Ciclopirox lacquer | 5.5–8.5% | Long-term daily use | Prescription topical. |
| Kerassentials | No published data | Daily, no tested duration | Cosmetic oil, unregulated as a treatment. |
Read our guide to toenail fungus treatment options for how to choose between them.
Who should consider Kerassentials, and who should skip it?
It may be a reasonable choice if
- A clinician has confirmed that your problem is mild, or you mainly want to condition dry nails and skin.
- You understand there is no trial evidence and can accept that it may do nothing.
- You are comfortable using the refund window if you see no benefit.
Skip it and see a clinician if
- The nail is thick, painful, spreading, or involves several toes.
- You have diabetes, poor circulation, or a weakened immune system.
- You are pregnant or nursing, or you are allergic to essential oils or tree nuts (the label lists almond and walnut oils).
- You have never had the nail tested. Treatment choice depends on knowing what it is.
Kerassentials is sold through its official website, with ClickBank as the retailer.
Check the current price on the official site Affiliate link: we may earn a commission at no extra cost to you. Confirm price and refund terms at checkout.How much does Kerassentials cost, and can you get a refund?
The sales page offers three bundles: 2 bottles, 2 + 1 bottles, and 3 + 3 bottles. Prices appear only as images, showing about $79, $69, and $49, which we read as per-bottle prices. The two larger bundles list free shipping and the 2-bottle option lists $9.99 shipping. Prices can change, so confirm the total at checkout.
The page advertises a 60-day, 100% money-back guarantee, requested through customer support. Because toenails grow slowly, 60 days is unlikely to show whether a new, clear nail is growing in. A large bundle commits you to far more product than you can judge within that window, so a smaller order is the more cautious way to try it.
Frequently asked questions
Does Kerassentials work for toenail fungus?
It has not been shown to. We found no published clinical trial of the finished Kerassentials oil. Some ingredients, mainly tea tree oil, have small studies or lab data, but that does not prove the product clears a nail infection. The product's own disclaimer says it is not intended to diagnose, treat, cure, or prevent any disease.
How long does Kerassentials take to work?
There is no trial data to give a reliable timeline. The sales page talks about new pink nail growth within the first weeks, but the American Academy of Dermatology notes that full nail regrowth can take a year or longer, so a 60-day guarantee ends long before a toenail has fully grown out.
Is Kerassentials FDA approved?
No. The product's own page states that its statements have not been evaluated by the FDA. Efinaconazole, tavaborole, ciclopirox, and oral terbinafine are the prescription options with clinical trial data for nail fungus.
Are Kerassentials customer reviews real?
We cannot verify them. Testimonials on the sales page are unverified, and many review pages found in search are paid placements or affiliate content, including this site's affiliate links. Treat star ratings you cannot trace to a verified purchase with caution.
Does Kerassentials have side effects?
Ingredient-level risks are the best guide. Tea tree oil caused redness and irritation in a minority of participants in a clinical trial, and essential oils, menthol, and camphor can irritate skin. The product label also lists almond and walnut oils, which matters if you have a tree nut allergy. Patch test first. Check with a clinician if you are pregnant, nursing, on medication, or have diabetes or poor circulation.
What are the ingredients in Kerassentials?
A product label image lists undecylenic acid at 5%, followed by mineral oil, sweet almond, organic flaxseed, tea tree, aloe vera leaf extract, canola, vitamin E, walnut, menthol, camphor, clove bud, jojoba, chia, lemongrass, lavender, and manuka oil. Only the undecylenic acid percentage is stated. Check the label on the bottle you receive, because the sales page shows a shorter list.
Can I get a refund on Kerassentials?
The sales page advertises a 60-day, 100% money-back guarantee, requested by contacting customer support. Orders are processed by ClickBank. Keep your order number and read the refund terms before you buy.
Sources
- Kerassentials official sales page and disclaimers, kerassentials.com, reviewed November 9, 2026.
- American Academy of Dermatology, Nail fungus: Diagnosis and treatment.
- Kawa N, Lee KC, Anderson RR, Garibyan L. Onychomycosis: a review of new and emerging topical and device-based treatments. J Clin Aesthet Dermatol. 2019;12(10):29–34.
- Buck DS, Nidorf DM, Addino JG. Comparison of two topical preparations for the treatment of onychomycosis. J Fam Pract. 1994;38(6):601–605.
- US Code of Federal Regulations, 21 CFR 333.210 (OTC antifungal active ingredients) and 21 CFR 333.250 (labeling).
- Complementary and Alternative Therapies for Onychomycosis: A Systematic Review of the Clinical Evidence (PubMed).