Review · Nail Health
Kerassentials review: the nail and skin oil made for toenail fungus
What does Kerassentials do?
Kerassentials is a liquid blend of 8 oils and nutrients that you brush on your nails and the skin around them once a day, after your shower. According to the maker, it supports healthy nails and skin and helps with the itch and smell linked to nail fungus. The maker does not publish how much of each ingredient is inside. It costs $49 to $79 a bottle (15 ml) on the official site, with a 60-day money-back guarantee.
- A daily oil for the nails and the skin around them
- 8 listed ingredients, including tea tree, lavender and lemongrass oils
- Bottle of 0.5 oz (15 ml), a month's use, according to the maker's packs
- Plant-based, non-GMO and free of stimulants, according to the maker
This page is based on the maker's product page, the bottle label shown on it, its guarantee terms and the public research linked in the sources. Benefits and claims are as described by Kerassentials. The maker does not publish a full ingredient label with amounts. It is not medical advice. How we review
Why is toenail fungus so hard to get rid of?
Thick, yellow, crumbly toenails. A smell you try to hide. Shoes you would rather not take off in public. Many people live with this for years, and many try creams, gels and home tricks with little to show for it.
There is a reason. The MedlinePlus (the health information site of the US National Library of Medicine) explains that a fungus grows in and around the nail, usually after a fungal infection of the foot. Toenails are hit more often than fingernails, and older adults are at higher risk. So are people with diabetes, poor circulation, weak immunity or tight, damp footwear [1].
The signs: thick or brittle nails, a change in shape, crumbling edges, debris under the nail, and white or yellow streaks. Only a health professional can say if it is really a fungus; a lab test of nail scrapings can take 4 to 6 weeks.
Treatment is slow. MedlinePlus says over-the-counter creams and ointments usually do not work, and that prescription pills clear the infection in about half of patients; the fungus can come back. Because nails grow slowly, a clear nail can take up to a year to appear after a successful treatment [1]. A Cochrane review of 48 trials of oral drugs adds that treatments you put on the nail have traditionally had low success rates because of how the nail is built [3].
That is the gap Kerassentials tries to fill: a product you apply yourself, every day, that is not a prescription. Whether it does is what this page checks.
What is Kerassentials and how does it work?
Kerassentials is a liquid for the skin, sold in a small glass bottle with a brush. The label on the maker's page reads 0.5 oz / 15 ml and "Doctor Formulated Blend For Healthy Skin and Nails". It is not a pill, a capsule or a powder, so nothing is swallowed.
The maker says to apply it every day after you shower. According to the maker, it:
- Supports healthy nails and skin.
- Helps with itching and foul smell linked to fungus.
- Helps new, healthy-looking nail grow in place of damaged areas.
The sales page also says CDC scientists found that most people stop antifungal treatment too early. We could not find that statement on the CDC's website, so we do not repeat it as a fact. Words like "revolutionary" are the maker's, not proven results. Kerassentials is sold as a skin and nail product, and the page says its statements have not been evaluated by the FDA and that it is not meant to diagnose, treat, cure or prevent any disease.
Only on the official site: the 60-day guarantee, the bonus e-books and the multi-bottle discount.
Can a nail oil really help with toenail fungus?
This is the question that matters, and the honest answer is: maybe a little, and nobody knows for this product. The research is about single ingredients and about other oil blends, not about Kerassentials.
Tea tree oil. The NCCIH (National Center for Complementary and Integrative Health), part of the NIH, says only a few studies have been done on tea tree oil for fungal nail infections, and the research is too limited to reach conclusions [2]. One of those studies, by Buck and colleagues in 1994, compared 100% tea tree oil with a 1% clotrimazole solution in 117 people with a confirmed nail infection, twice a day for 6 months. Reviews of it report no statistical difference between the two, and note that the study had weaknesses [5].
A similar oil blend. A small open study in Skin Appendage Disorders tested a different product, an oil with vitamin E (tocopheryl acetate) plus lime, oregano and tea tree oils, in 20 adults with mild to moderate nail fungus. They applied it once a day for 6 months and were followed for 6 more. The authors report that 78.5% were cured at 12 months, with no side effects recorded [4]. But only 14 people were counted at the end, six dropped out, there was no comparison group, and the numbers in the paper do not fully add up. It is a hint, not proof. It was also not a Kerassentials study.
The maker's references. The sales page lists about 30 scientific references. Many are about single oils tested in a lab dish. A result in a dish does not mean the same result on a toenail, which is thick and protects the fungus underneath.
The bigger picture. The Cochrane review says treatments applied to the nail have had low success rates, and that oral drugs clear the infection in about half of cases [3]. A daily oil may be a gentle extra, but it would be a stretch to say it replaces a doctor's treatment.
What is in Kerassentials, and what does the research say?
The maker's page names eight ingredients and describes each in three short lines. It does not show a full label with the amount of each one, and we found no ingredient label for Kerassentials in the NIH Dietary Supplement Label Database (it is a skin product, not a supplement). The maker does not publish the amount of each ingredient, so nobody can tell how strong the oil is or whether the doses match those used in studies.
The ingredients, in the order the maker lists them, with what we found:
Inside the Kerassentials formula
What to expect from Kerassentials, week by week
The maker says the itch may ease quickly and new pink nail may grow in during the "first weeks", with no clear schedule. Nails grow slowly, and MedlinePlus says a clear nail can take up to a year to show after a successful treatment [1]. So the 60-day guarantee ends long before a full nail has grown out. What you can control is how you track what happens while the guarantee covers you.
| When | What to do | Why |
|---|---|---|
| Before you start | If the nail is thick, painful, changing fast or you have diabetes or poor circulation, see a doctor or podiatrist first. Take a clear photo of each nail. | A doctor can confirm it is a fungus. Some nail problems look the same but need another treatment. Photos are your starting point. |
| Day 1 | After your shower, dry your feet well, then brush the oil on the nail and the skin around it, as the maker says. Do a first test on a small area of skin. | Clean, dry skin is best. A small test shows if you react to the oil. |
| Weeks 1–2 | Apply once a day. Watch for redness, burning or itching that is new or worse. Stop if it appears. | Essential oils can irritate some people's skin, according to the NCCIH. |
| Weeks 3–6 | Take a photo of each nail every two weeks, in the same light. Look near the cuticle for a new clear band of nail. | A new nail grows from the base. Slow progress there is the real sign to look for. |
| Weeks 7–8 | Decide: keep going or ask for a refund. | The guarantee lasts 60 days. Leave time to write to support. |
| Month 3 and on | Keep your habits (dry feet, clean socks). Show the photos to your doctor. | Toenails take many months to grow out; a doctor can judge the photos. |
Only on the official site: the 60-day guarantee, the bonus e-books and the multi-bottle discount.
Kerassentials pros and cons
The short list, based on the maker's page and the research above.
Pros
- Not a pill: you brush it on the nail, with no swallowing
- Easy routine: once a day after the shower
- Includes tea tree oil, the best-known oil in the small nail studies
- Plant-based and free of stimulants, according to the maker
- 60-day money-back guarantee
- Free shipping and 3 bonus e-books on the 6-bottle pack
Cons
- No studies on Kerassentials itself
- The amount of each ingredient is not published
- Research on oils for nail fungus is small and weak, and a nail takes months to grow out
- The sales page claims, testimonials and "14,576 reviews" cannot be verified
- No single-bottle option: the smallest order is 2 bottles plus shipping
- We found no complaint profile for the official site, so there is little outside feedback to read
Only on the official site: the 60-day guarantee, the bonus e-books and the multi-bottle discount.
Is Kerassentials safe? Side effects and when to see a doctor
The maker says the formula is natural and has no chemicals. "Natural" does not mean harmless on the skin. The NCCIH says most people use tea tree oil on the skin without problems, but some get redness or irritation, more often if the oil is old or has been exposed to heat, light or air. It adds that tea tree oil should not be swallowed: swallowing can cause confusion, unsteadiness and even coma [2]. The NCCIH also says topical lavender may cause allergic skin reactions in some people [6].
Keep the bottle away from children and pets. The sales page says to ask your doctor if you are pregnant, nursing, taking medicine or have a medical condition. We found no label for Kerassentials with full warnings, so ask a pharmacist if you are unsure.
| Situation | Why it matters | What to do |
|---|---|---|
| Redness, burning or itching on the skin | Essential oils can irritate or cause an allergic reaction, according to the NCCIH. | Stop using it and rinse with water. If it does not settle, call a doctor. |
| Swallowed some oil | Tea tree oil taken by mouth can cause serious symptoms, according to the NCCIH. | Call your local poison control or emergency number at once. |
| Diabetes, poor circulation or nerve problems in the feet | MedlinePlus lists these as risk factors, and foot infections can become serious. | See a doctor before using any nail product. |
| Pain, swelling, pus or red skin around the nail | MedlinePlus says to see a provider if the skin around the nail is painful, red or drains pus. | See a doctor. Do not wait for an oil to work. |
| Pregnant, nursing or under 18 | Little is known about topical lavender in pregnancy or nursing, according to the NCCIH. | Ask your doctor first. |
| The nail does not improve or changes color fast | Another condition may look like fungus. | Show your doctor your photos. |
Who is Kerassentials for, and who should skip it?
Kerassentials can make sense for:
- Adults with mild nail changes who want a daily nail and skin oil to try next to good foot habits, and who like a guarantee.
Better to skip it or ask a doctor first if you:
- Have diabetes, poor circulation or a weak immune system.
- Have pain, swelling, pus or fast changes in a nail.
- Are pregnant, nursing or take medicine.
- Want to know the exact amount of each ingredient. The maker does not publish it.
Habits that help keep nails healthy, with or without Kerassentials
These steps come from MedlinePlus [1]. They cost little or nothing and matter whatever you use.
- Keep skin clean and dry, especially between the toes. Dry your feet well after every shower.
- Take good care of your nails and do not share nail clippers or pedicure tools.
- Wash and dry your hands after touching an infected nail.
- Avoid tight, damp shoes and change sweaty socks.
- See a doctor if the infection does not go away, or if the skin around the nail turns painful, red or drains pus.
How much does Kerassentials cost, and which pack is the best deal?
Kerassentials is sold on the official site (full breakdown and where to buy safely: Kerassentials price). If a bottle lasts about a month, as the pack sizes suggest, the 2-bottle pack works out to about $2.63 a day, the 3-bottle pack to $2.30 and the 6-bottle pack to $1.63, before shipping.
Which one? The 2-bottle pack is the smallest order and has $9.99 shipping. The 3-bottle pack (sold as "2 + 1") covers 90 days. The 6-bottle pack ("3 + 3") is the cheapest per bottle and the only one with the bonus e-books, but it is the biggest cost up front. Nails grow out over many months, but the guarantee lasts only 60 days, so do not buy more than you are willing to return.
One detail: the crossed-out totals on the order page ($358, $537 and $1,074) are based on $179 a bottle. We did not find Kerassentials sold at that price anywhere, so the "savings" are the maker's own numbers. Prices were checked on Oct 17, 2026 and can change.
3 bottles
$207 ($69 a bottle)
90-day supply. Free shipping to some destinations. Surprise gift.
6 bottles
$294 ($49 a bottle)
180-day supply. Free shipping to some destinations. 3 bonus e-books and a surprise gift.
The 3 free bonus e-books
The 6-bottle pack comes with three digital guides and a "surprise gift" that the maker does not describe. The 3-bottle pack also lists a surprise gift.
- Skin SOS: a guide for eczema, psoriasis and itchy skin, with a "honey trick" and a cabbage-leaf remedy.
- Barefoot Ready: five habits for stronger nails, including a baking-soda soak and a "piano tapping" method.
- The Fungal Full Detox Plan: dessert recipes, a 14-day smoothie plan and a sunlight trick.
They are e-books, not extra bottles, and we have not read them. A doctor is the better source for eczema or psoriasis. Nice to have, not a reason to choose a pack.
Kerassentials 60-day guarantee and shipping
The maker says every order is covered by a 60-day, 100% money-back guarantee. If you are not impressed, you write to customer support and get a refund of what you paid. The sales page does not spell out the steps, who pays the return shipping or whether opened bottles are accepted. Read the refund policy on the official site before you order, and keep your order email.
- Write to support by day 50, not on day 59.
- Ask what to send back, and where, before you ship anything.
Shipping is $9.99 on the 2-bottle pack and free on the 3- and 6-bottle packs for some destinations; the checkout shows the cost for your address. The maker says orders from outside its home country pay extra shipping fees.
Only on the official site: the 60-day guarantee, the bonus e-books and the multi-bottle discount.
Is Kerassentials legit or a scam?
Kerassentials is a real product with an official site, a bottle label and a guarantee. We cannot say how it performs in real life. Some points to know before you buy:
- "Doctor formulated". The bottle says this, but we found no doctor named and no study of the product.
- Regulation. The sales page says the FDA has not evaluated its statements. The FDA says it does not approve manufacturing facilities, and that cosmetics generally do not need approval before they are sold [7]. Be wary of "FDA registered" claims you may read elsewhere: registration is not approval.
- Testimonials and ratings. The sales page shows three quotes with names and places and says "based on 14,576 reviews". We could not verify any of it, and we do not treat it as real reviews.
- Complaints. On Oct 17, 2026 we looked for the official site on Trustpilot and found no profile for it. We also found no Kerassentials profile on the Better Business Bureau website. Without outside reviews, the 60-day guarantee is your main protection.
To be sure the guarantee applies, order through the official site and keep your order email.
Only on the official site: the 60-day guarantee, the bonus e-books and the multi-bottle discount.
Key terms explained
- Onychomycosis
- The medical name for a fungal nail infection.
- Dermatophyte
- A kind of fungus that feeds on keratin. It is a common cause of nail fungus.
- Keratin
- The hard protein that nails are made of.
- Essential oil
- A strong oil taken from a plant, such as tea tree or lavender. It can irritate skin if used straight.
- Topical
- Put on the skin or nail, not swallowed.
- Nail bed
- The skin under the nail plate. A nail grows out from its base, near the cuticle.
- Mycological cure
- A lab test of nail scrapings that no longer shows fungus. It is stricter than a nail that only looks better.
- Open study
- A study with no comparison group, so results are less reliable.
Kerassentials FAQ
What is Kerassentials?
A liquid blend of oils and nutrients that you brush on your nails and the skin around them once a day, according to the maker. It is sold as a nail and skin care product.
Does Kerassentials work?
We found no published study on Kerassentials itself. Some ingredients, like tea tree oil, have small studies for nail fungus, but experts call the research limited. The 60-day guarantee lets you test it.
What are the Kerassentials ingredients?
Lavender oil, organic flaxseed oil, almond oil, tea tree oil, lemongrass oil, aloe vera, tocopheryl acetate (vitamin E) and undecylenic acid. The maker does not publish the amount of each.
How do I use Kerassentials?
The maker says to apply it every day after a shower, on the nail and the skin around it. Do a small skin test first.
How long does it take to see results?
The maker gives no clear plan. Toenails grow slowly, and a clear nail can take up to a year to show after a successful treatment, according to MedlinePlus.
Is Kerassentials safe?
Most people use tea tree oil on the skin without problems, but some get irritation, and it must never be swallowed. If you have diabetes or poor circulation, see a doctor first.
Does Kerassentials have side effects?
The maker lists none. Essential oils can cause redness, burning or an allergic reaction on the skin. Stop using it if that happens.
How much does Kerassentials cost?
$158 for 2 bottles (+ $9.99 shipping), $207 for 3 bottles and $294 for 6 bottles. The 6-bottle pack works out to $49 a bottle.
Where can I buy Kerassentials?
On the official site, where the 60-day guarantee applies. Be careful with other sellers, because we could not confirm who runs them.
What if Kerassentials doesn't work for me?
You have 60 days to ask for a refund by writing to support. Check the refund policy for how to send the bottles back.
Is Kerassentials a scam?
It is a real product with a guarantee, but its claims and testimonials cannot be verified. Buy only from the official site.
Sources
Public research and official pages used for this review, checked on Oct 17, 2026.
- MedlinePlus (US National Library of Medicine). Nail fungus. Link
- NCCIH (US National Institutes of Health). Tea Tree Oil. Link
- Kreijkamp-Kaspers S et al. Oral antifungal medication for toenail onychomycosis. Cochrane Database of Systematic Reviews, 2017. Link
- Alessandrini A et al. An open study to evaluate effectiveness and tolerability of a nail oil composed of vitamin E and essential oils in mild to moderate distal subungual onychomycosis. Skin Appendage Disorders, 2020. Link
- Buck DS et al. Comparison of two topical preparations for the treatment of onychomycosis: Melaleuca alternifolia (tea tree) oil and clotrimazole. Journal of Family Practice, 1994. Link
- NCCIH (US National Institutes of Health). Lavender. Link
- FDA. Is it really 'FDA approved'? Link
- Kerassentials. Product page (official site).
Ready to try Kerassentials?
Order from the official site: 60-day money-back guarantee, and the 6-bottle pack brings the price down to $49 a bottle with free shipping, 3 bonus e-books and a surprise gift.