Nail fungus, whether it is affecting your fingernails or toenails, is a widespread condition around the world. Many people don’t even know they are suffering from this condition until they can clearly see their nails deteriorating, turning yellow and splitting, deforming or getting thicker. Usually, when it starts to visibly show, the fungus is already well-rooted in the nailbed. Here, on our website, we have previously discussed nail fungus and tried to give you tips on how to get rid of it, as it is not an easy or a fast process. So, if you want to know more about what nail fungus is and some effective topical nail treatments that you can use at home, click HERE.
Today, we are going to review a top-rated yet controversial product that has been used by many people, mainly to treat the symptoms of a fungal infection. That being said, let’s see what Kerasal Fungal Nail Renewal is, what it can do for you, how it works and how to use it so you can achieve the best results, fast.
1. Kerasal Fungal Nail Renewal Treatment
First things first – Kerasal is not a fungus treatment
Have you noticed how we said that this product is used to treat the symptoms of fungal infections but not the fungal infection itself? Many people get confused when purchasing this product, thinking they are buying a fungal treatment, but in actuality, this is an adjuvant that can be used in conjunction with your nail fungus treatment. Why? Because this product helps to improve the appearance of your damaged nails.
What it does
- It improves nail appearance in one week, but you start to visibly see results in just two days
- It reduces nail discoloration
- It normalizes nail thickness
- It hydrates brittle nails
- It can be used in conjunction with other fungus treatments, whether they are oral medications or topical treatments
So, even though Kerasal is not a fungus treatment, that doesn’t mean it isn’t useful or effective, on the contrary. This is a topical solution that can rapidly improve the state of your nails.
If you ever had nail fungus, you could undoubtedly remember how hard it was (or it still is) to treat. The process can last for months, and during that time, you are still battling with thick, yellow and deformed nails. When you treat nail fungus, it is always advised to keep the affected area (nail) as dry as you can and try to wear sandals or any open type of shoes so that you can help destroy the fungus by creating a hostile environment. Fungi love wet and dark environments, so by doing the opposite, you can help eliminate it faster.
The problem is that during this process, you still have to expose your hands or feet and go about your day without feeling embarrassed. Well, that is where this product can help in terms of the nail’s appearance. It might not seem much, but this can be a significant boost to your self- confidence. So, hear us out and don’t dismiss this product until you learn a bit more about it.
About Kerasal
Kerasal is a nail restorer that can drastically improve the nail’s appearance, normalize its thickness, hydrate it and reduce the discoloration. This is a fragrance-free solution, and it doesn’t have any preservatives either. Kerasal was clinically tested and, in a recent study, it was discovered that most users started seeing results after two days of use, while 90% of all tested people saw a considerable improvement after eight weeks of use. Even after eight weeks have passed, the study showed that people saw continuous improvements with longer usage. The full effect can be achieved (depending on the severity of your own condition) in three to six months, meaning that the nail looks and feels as good as new.
The question is, how does this product work? Well, that’s easy. Let’s start with the ingredients.
Ingredient List
Unlike many other nail treatments, Kerasal has a short ingredient list that combines just a few essential ingredients that work together to restore the damaged nails. Let’s see what the ingredients are and how they can help.
- Urea
- Propylene Glycol
- Glycerin
- Lactic Acid
- Water
- Sodium Hydroxide
- Disodium EDTA
Urea
This is the main active ingredient, and, in fact, it can be found in many skincare products, as well as makeup or haircare products. In this case, Urea helps by softening the keratin that is found in nails and skin, thus normalizing the thickness level on the affected nail. For toenail fungus, Urea helps tremendously because oftentimes, the most affected toenail is the nail on your big toe, and this can have a great impact on the overall appearance. Urea also has a moisturizing effect, thus locking the water in and stopping your nail from cracking and splitting due to severe dryness. Used in conjunction with an antifungal agent, urea brings great advantages to onychomycosis treatments and it can be a great helper.
Lactic Acid and Glycerin
These two acids, otherwise known as AHAs (Alpha-hydroxy acids), are derived from natural organic sources. For example, glycolic acid is derived from sugar cane and lactic acid from milk. They work as exfoliators and hydrators when applied to the skin. In this case, they prevent nail breakage by keeping the water in.
Sodium Hydroxide
This is simply a substance that stabilizes the PH levels and can be found in many beauty products and cosmetics in general.
Disodium EDTA
This is an agent that prevents cosmetic products from deteriorating, so it prevents rancidity.
Propylene Glycol
Propylene Glycol is a substance that is used in medicine to stabilize the drugs, but also as a solvent, to ensure that all ingredients can dissolve.
So, as you can see, the main active ingredients are Urea, Lactic Acid and Glycolic Acid. The rest of the ingredients are just there to bind them all together, stabilize them and prevent them from deteriorating, thus giving them a longer shelf life.
Does Kerasal work?
The short answer is yes. Many people have tried it by now and many of them were satisfied with the results. Kerasal works in the sense that it does what it claims to do. Overall, the majority of users understood what this product was, and they were able to achieve good results, meaning that their nails got thinner, whiter, basically returned to a healthy state. However, another thing that you should keep in mind is that this product, if used alone, will work only in the short term. This means that if you stop using it (even after months of treatment), your nail slowly goes back to its previous infected state because the nail fungus is still there.
This is the part that confuses most people, but things are relatively simple. Kerasal is not an anti-fungal treatment. If you are thinking of buying it to treat and cure your fungus, this will not work. Instead, if you use it to improve the appearance, it works wonders on your nails. The bottom line is if you want to achieve great appearance as well as combat the fungus infection, the best way to do that is to use this together with an anti-fungal treatment. This way, your nail condition improves visibly while you also fight the infection, preventing it from returning after you stop using the product.
Where can I find Kerasal Nail Treatment?
Kerasal can be found in stores like Walmart, Target, or Walgreens, but you can also find it HERE on Amazon. Check the official website if you have further questions or if you want to learn more about the product.
What do I get?
Kerasal Nail Treatment comes in a 10 ml tube that can last up to three months if applied as instructed (in thin layers). The silicone tube is very easy to use, and you don’t need any additional brushes or applicators.
How to use Kerasal Nail Treatment
During the first week, you need to apply a thin layer of the product twice a day (in the morning and at night). It is crucial to apply the product on the nail, as well as under the free edge for the best results. You can use this both for fingernails and toenails. After one week has passed, you will only need to apply it once a day for eight weeks total.
Do not use any kind of polish while treating the affected nail because it can prevent the product’s absorption and it limits the desired effects.
PROS
- It is a great short-term solution when it comes to improving the nail’s appearance
- It is easy to use due to the silicone applicator
- It is odorless and colorless
- It has no preservatives or fragrances, which means it is gentle with your skin and nails
- It has few ingredients and they are derived from natural sources, so there are no side effects.
- It dries quickly, you don’t need to wait for a long time to be able to go about your day
- The price point is great, it is affordable
- You can use it in conjunction with any other fungus treatments
- You can start to see results immediately. The nail’s condition improves from the first week of use.
CONS
- It is not an anti-fungal treatment
- It is not guaranteed to work as advertised because it depends on the severity of your fungal infection, the state of your nail and your diligence and willingness to stay on track when it comes to the instructions.
- It doesn’t do anything more than slowly dissolving the nail so it can improve its appearance
Read Also: Zetaclear Reviews With Pros And Cons of 2026
F.A.Q’s About Kerasal Nail Treatment Review
🧴 Does Kerasal actually work?
Yes—but not in the way most people think.
- Kerasal (like Kerasal Fungal Nail Renewal) mainly improves the appearance of nails damaged by fungus (color, thickness, roughness).
- It does NOT kill the fungus itself—it’s not a true antifungal medication.
👉 Think of it as:
- ✔ Cosmetic repair + softening thick nails
- ❌ Not a cure for infection
⏳ How long does Kerasal take to work?
- Some people see visible improvement in 2 days to 1 week
- Most noticeable results: ~8 weeks
- Full improvement (especially toenails): 3–6 months
Toenails grow very slowly, so patience is key.
⚙️ How does Kerasal work?
It uses a combination of ingredients:
- Urea → softens thick nail
- Lactic acid → exfoliates damaged layers
- Propylene glycol → helps penetration & hydration
👉 Result: thinner, smoother, less discolored nails.
🧪 Side effects (negative effects)
Kerasal is generally mild, but possible issues:
- Dryness or peeling skin around nail
- Mild irritation or burning
- Sensitivity (rare)
These come from the exfoliating acids.
🦶 Is Kerasal good for feet?
Yes—for:
- Thick, yellow nails
- Rough, damaged nails
- Cosmetic improvement after fungus
But again: it doesn’t cure infection.
🦠 What is the most effective treatment for toenail fungus?
The most successful treatments are medical antifungals:
Best options:
- Oral antifungals (most effective)
- e.g., terbinafine (prescription)
- Cure rates: ~60–80%+
- Topical antifungals
- e.g., ciclopirox, efinaconazole
- Slower and less effective
👉 Best strategy:
- Kill fungus (medication) + use Kerasal to improve nail appearance
🛑 When should you stop using Kerasal?
- When the nail has grown out healthy
- Or if:
- irritation occurs
- no improvement after ~3–4 months
💪 Healthiest nail strengthener?
Look for:
- Urea (like Kerasal)
- Keratin-based formulas
- Biotin (oral supplement)
But note: “strengtheners” don’t treat fungus either
📅 Can you use Kerasal daily?
Yes:
- Twice daily for 1 week
- Then once daily after
👉 Using more than recommended won’t speed things up.
✋ Can it be used on fingernails?
Yes—safe for both fingernails and toenails
💅 Can you use it with nail polish?
Yes, but:
- Apply to clean nail first
- Let it dry
- Then apply polish
⏱️ How long does it take to dry?
- Usually a few minutes
🧦 Can you put socks on after?
Yes—after it dries.
🧴 How to apply Kerasal (simple steps)
- Clean and dry nail
- Apply thin layer (top + under edge)
- Let dry
- Repeat daily
🇺🇸 Where is Kerasal made?
- Manufactured in the USA
🧠 Which Kerasal is best for toenail fungus?
- Kerasal Fungal Nail Renewal (standard version)
- Tea tree version = similar, with added oil
👉 Both are for appearance, not cure.
🦶 Can nails go back to normal after fungus?
Yes—but only if:
- Fungus is treated (killed)
- Healthy nail grows out
👉 This takes months to a year
🧬 Does fungus live in the nail bed?
Yes:
- It lives under and inside the nail
- That’s why it’s hard to treat
🚨 What happens if untreated for years?
- Nail thickens and deforms
- Can spread to other nails or skin
- May cause pain or difficulty walking
🛏️ Can fungus live on bed sheets?
Yes (temporarily):
- Fungal spores can survive on surfaces
- Reinfection is possible
👉 Wash socks, towels, bedding regularly
❓ How do you know treatment is working?
Look for:
- New nail growing from base = clear/normal
- Old damaged nail growing out
👉 The old nail will NOT heal—it must grow out.
⚠️ Final honest takeaway
- Kerasal = cosmetic improvement tool
- NOT a cure for fungal infection
- Works best alongside antifungal treatment
Final thoughts on Kerasal Fungal Nail Renewal
Although this is not an expensive product or directly marketed as an anti-fungal treatment, people tend to get confused. “Fungal Nail Renewal”, as it is named, doesn’t really explain what it does, and that’s why many people buy it in the hope that they can treat their toenail or fingernail fungus. That being said, we hope that we explained everything thotoughly, and you got an idea about what this product is.
Even though Kerasal can help with the appearance, your primary problem is still the fungus infection. If you don’t want your infection to get worse and eventually ruin your nail, you have to start treating it with proper antifungal medication.
On the other hand, most over the counter antifungal treatments already contain ingredients that help to reduce the yellowness of the infected nail, as well as the structure. The only thing that is slightly different in terms of the nail’s appearance is that Kerasal can work faster, so you can start seeing some results in the early stages of usage.
That being said, we also have mixt feelings about this product. Even if it works as advertised, you could be better off buying a topical antifungal treatment that could also help improve the appearance of the infected nail. In the end, it is up to you. In our opinion, it is best to use this product in conjunction with an antifungal treatment for the best results. If you have a severe fungus case, always talk to your doctor about this and follow the instructions.
We hope you know more about this product by now, and it will be easier for you to decide based on this review. Just remember that nail fungus is treatable and curable, so take action today because the earlier you start, the better and the faster you will achieve the best results and, of course, healthy nails!