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Numark Corn Removal Plasters With Salicylic Acid

Numark Corn Removal Plasters With Salicylic Acid

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  • ✔️ Targets and softens painful foot corns with salicylic acid 40%
  • ✔️ Keratolytic action breaks down hardened corn tissue gradually
  • ✔️ Cushioned plaster format relieves pressure while treating the corn
  • ✔️ Suitable for adults with clearly defined corns on feet or toes
  • ✔️ Simple peel-and-apply design for accurate, mess-free corn treatment

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What Are Corn Removal Plasters and Do They Really Work?

 

Corns are small, hardened areas of skin that develop on the feet — usually on the tops or sides of toes — in response to repeated friction or pressure. They can be surprisingly painful, especially when you're walking or wearing shoes. Corn removal plasters offer a straightforward, at-home solution that most people can use without a prescription. Numark Corn Removal Plasters With Salicylic Acid are available for just £2.49, making them one of the most accessible options for managing this common foot complaint. If you're looking after your feet more broadly, you might also find our foot care collection useful for related products.

Corns are distinct from calluses — they tend to have a hard central core and are more localised. According to the NHS, corns are caused by pressure or friction, often from poorly fitting footwear, and they can affect anyone. Salicylic acid has been used as a keratolytic treatment for decades and remains the standard active ingredient in most over-the-counter corn treatments available in the UK.

 

How Do Numark Corn Removal Plasters Work on Hard Skin?

 

The active ingredient in these plasters is salicylic acid at a concentration of 40%. It works by softening the keratin — the protein that makes up the outer layers of skin — causing the hardened tissue of the corn to break down gradually. Here's what happens when you apply the plaster:

  • Salicylic acid penetrates the thickened skin of the corn
  • It disrupts the bonds holding dead skin cells together (keratolysis)
  • The softened tissue becomes easier to lift away gently
  • Repeated applications over several days continue this process until the corn is fully removed

The plaster format is particularly helpful because it keeps the salicylic acid in direct, sustained contact with the corn while also providing a degree of cushioning to reduce discomfort when walking.

 

Who Should Use Numark Corn Removal Plasters?

 

These plasters are suitable for most adults who have a confirmed corn on their foot. They're especially useful if you want a simple, mess-free alternative to liquid corn paints or gels. That said, they're not appropriate for everyone.

  • Adults aged 16 and over with a corn on the foot or toe
  • People who prefer a targeted, plaster-based treatment over liquids
  • Those with a single, clearly defined corn rather than widespread hard skin
  • Individuals who have ruled out other causes of foot pain (such as verrucas or blisters)

You should not use these plasters if you have diabetes, poor circulation, or peripheral neuropathy. In these cases, even minor skin damage can lead to serious complications, and you should always seek advice from your GP or podiatrist before using any medicated corn treatment.

 

How Do Numark Corn Plasters Compare to Other Corn Treatments?

 

Feature Numark Corn Removal Plasters Salicylic Acid Corn Paint/Gel
Active ingredient Salicylic acid 40% Salicylic acid (variable %)
Application method Pre-cut medicated plaster Brush or dropper application
Cushioning effect Yes — built-in padding No
Ease of use Simple peel-and-apply Requires careful application to avoid surrounding skin

 

Are Numark Corn Removal Plasters Suitable for Sensitive Skin?

 

If you have sensitive skin, you should take care when using any product containing corn removal plasters with salicylic acid. The acid can irritate the healthy skin surrounding the corn if the plaster is not positioned accurately. Always apply the plaster so the medicated pad sits directly over the corn only, and avoid placing it on unaffected skin. If you notice redness, burning, or irritation beyond the corn itself, remove the plaster and allow the skin to recover before reapplying.

Storage is straightforward — keep the plasters below 25°C in a dry place, away from direct sunlight and out of reach of children. For other skin-related products, browse our skin care collection at Cured Pharmacy.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

Numark Corn Removal Plasters With Salicylic Acid specifications
Treatment category Foot care / Corn treatment
Mechanism of action Keratolytic — softens and breaks down hardened skin
Effective for Corns on feet and toes
Suitable for Adults aged 16 and over (not suitable for diabetics without medical advice)
Active ingredient Salicylic acid 40%
UK classification General Sale List (GSL)
Drug class Keratolytic agent
Preparation Medicated adhesive plaster
Route of administration Topical (cutaneous)

Specifications of Numark Corn Removal Plasters With Salicylic Acid

 

What Are Numark Corn Removal Plasters and What Are They Used For?

 

Numark Corn Removal Plasters With Salicylic Acid are an over-the-counter topical treatment designed to remove corns from the feet and toes. Each plaster contains a medicated pad impregnated with salicylic acid 40%, a well-established keratolytic agent that softens the hardened skin making up a corn. The plasters are used by adults aged 16 and over who have a clearly defined corn caused by friction or pressure — most commonly from ill-fitting shoes or abnormal foot mechanics.

Corns are not the same as verrucas or calluses, and it's worth being sure of what you're treating before you start. The NHS describes corns as small circles of hard skin with a central core, often found on the tops or sides of toes. If you're unsure whether you have a corn, a pharmacist can help you identify it before you begin treatment.

 

What Do You Need to Know Before Using Numark Corn Removal Plasters?

 

Before applying these plasters, read the following contraindications and warnings carefully:

  • Do not use if you have diabetes mellitus — reduced sensation in the feet means skin damage may go unnoticed and lead to serious complications
  • Do not use if you have poor circulation or peripheral arterial disease
  • Do not apply to broken, infected, inflamed, or irritated skin
  • Do not use on moles, birthmarks, warts, or verrucas
  • Do not use on the face or genitals
  • Not recommended for children under 16 without medical advice
  • Avoid contact with eyes and mucous membranes
  • Do not use during pregnancy or breastfeeding without first consulting your GP or pharmacist

Known drug interactions with topical salicylic acid at this concentration are minimal when used as directed. However, if you are using other topical medicines on the same area of skin, speak to your pharmacist first. There are no significant systemic drug interactions reported for topical salicylic acid used on a small skin area.

  • No significant interactions with oral medicines at standard topical doses
  • Avoid combining with other keratolytic agents on the same site

 

How Should You Use Numark Corn Removal Plasters Correctly?

 

Follow these steps carefully to get the best results and minimise the risk of skin irritation. Accurate placement is key — the medicated pad must sit directly over the corn and not on the surrounding healthy skin.

  1. Wash and dry your feet thoroughly before application
  2. Soak the affected foot in warm water for 5 minutes to soften the skin
  3. Dry the area completely — the plaster will not adhere well to damp skin
  4. Peel the backing from the plaster and position the medicated pad directly over the corn
  5. Press firmly around the edges to secure the plaster in place
  6. Leave in place for up to 48 hours before removing
  7. After removing, gently rub the softened skin with a pumice stone or emery board
  8. Repeat the process until the corn is fully removed
Indication Age Group Dose Frequency
Corn on foot or toe Adults 16+ One plaster per corn Replace every 48 hours
Corn on foot or toe Under 16 Not recommended without medical advice

 

What Are the Possible Side Effects of Numark Corn Removal Plasters?

 

Like all medicines, these plasters can cause side effects, although not everyone experiences them. Most side effects are localised to the skin at or near the application site.

Common side effects:

  • Mild redness or irritation of the skin surrounding the corn
  • Slight stinging or burning sensation on application
  • Temporary whitening of the treated skin (this is normal with salicylic acid)

Less common side effects:

  • Blistering of the skin around the corn
  • Increased pain or tenderness at the site
  • Signs of skin infection (warmth, swelling, discharge) — seek medical advice promptly if this occurs

If you experience significant burning, blistering, or any sign of infection, remove the plaster immediately and do not reapply. Contact your pharmacist or GP for advice. You can also browse our first aid collection for wound care products if the skin becomes broken.

 

How Should You Store Numark Corn Removal Plasters?

 

  • Store below 25°C in a cool, dry place
  • Keep away from direct sunlight and sources of heat
  • Keep out of the sight and reach of children
  • Do not use after the expiry date printed on the packaging
  • Do not store in the bathroom — humidity can affect the adhesive and the medicated pad

If you have any unused plasters after completing your treatment, dispose of them responsibly. Your local pharmacy can advise on safe disposal of unused medicines and medical products. For other foot-related concerns, our athletes foot and fungal infections collection covers a range of treatments for common foot conditions.

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Your safety and success are our highest priorities. Our medical team rigorously evaluates every product and piece of advice we provide, ensuring you receive only the most effective, science-backed solutions available.

Frequently Asked Questions

Where can I buy Numark Corn Removal Plasters online in the UK?

You can buy Numark Corn Removal Plasters With Salicylic Acid directly from Cured Pharmacy online for just £2.49, with fast UK delivery. They are a General Sale List (GSL) medicine, so no prescription is needed. They may also be available from selected high street pharmacies and supermarkets across the UK.

How do Numark Corn Removal Plasters work in the body?

The plasters contain salicylic acid 40%, which acts as a keratolytic — it breaks down the protein keratin that makes up the hardened skin of a corn. This softens the corn tissue over repeated applications, making it easier to lift away gently. The plaster format keeps the acid in sustained contact with the corn while also cushioning the area to reduce walking discomfort.

How do I use Numark Corn Removal Plasters step by step?

Start by soaking your foot in warm water for around 5 minutes, then dry the skin thoroughly. Peel the backing from the plaster and press the medicated pad firmly over the corn, making sure it doesn't overlap onto healthy skin. Leave it in place for up to 48 hours, then remove, gently rub the softened skin with a pumice stone, and repeat until the corn is gone.

How long does it take for corn removal plasters to work?

Most corns begin to soften noticeably within the first week of consistent use, with full removal typically taking 2 to 4 weeks depending on the size and depth of the corn. Smaller, more superficial corns may respond faster. If you see no improvement after 12 weeks of use, stop treatment and consult your pharmacist or GP.

What is the correct dose of Numark Corn Removal Plasters?

Apply one plaster per corn and replace every 48 hours. Do not apply more than one plaster to the same corn at a time, and do not use on more than one or two corns simultaneously without pharmacist advice. Always follow the instructions in the pack leaflet.

Are Numark Corn Removal Plasters safe for people with diabetes?

No — people with diabetes should not use salicylic acid corn plasters without first consulting their GP or podiatrist. Diabetes can cause reduced sensation in the feet (peripheral neuropathy), meaning skin damage from the acid could go unnoticed and lead to serious complications. The NHS strongly advises people with diabetes to seek professional foot care rather than self-treating with medicated corn products.

Can children use Numark Corn Removal Plasters?

These plasters are not recommended for children under 16 without medical advice. Corns are uncommon in children and may indicate an underlying foot problem — such as a structural issue or ill-fitting footwear — that should be assessed by a GP or podiatrist. Always seek professional guidance before using medicated corn treatments on a child.

What are the side effects of salicylic acid corn plasters?

The most common side effect is mild redness or irritation of the skin surrounding the corn, along with a slight stinging sensation. Temporary whitening of the treated skin is normal and expected with salicylic acid. Less commonly, blistering or signs of infection may occur — if this happens, remove the plaster and seek pharmacist advice promptly.

What should I do if the plaster irritates the skin around my corn?

Remove the plaster immediately if you notice significant redness, burning, or blistering on the healthy skin surrounding the corn. Allow the area to recover for a day or two before reapplying, and take extra care to position the medicated pad only over the corn itself. If irritation persists, speak to your pharmacist before continuing treatment.

Who is eligible to use Numark Corn Removal Plasters?

These plasters are suitable for adults aged 16 and over who have a clearly defined corn on the foot or toe caused by friction or pressure. They are not suitable for people with diabetes, poor circulation, peripheral neuropathy, or broken and infected skin. Pregnant or breastfeeding women should consult their GP or pharmacist before use.

What happens if I leave the plaster on for too long?

Leaving the plaster on for longer than the recommended 48 hours can increase the risk of irritation or maceration (over-softening) of the surrounding healthy skin. Always change the plaster at the recommended interval and inspect the skin each time you remove it. If the skin looks very white, soggy, or sore, give it a rest before reapplying.

What are the alternatives to corn removal plasters?

Alternatives include salicylic acid corn paints or gels, non-medicated cushioning pads that relieve pressure without treating the corn directly, and professional corn removal by a podiatrist. You can explore a range of related products in our foot care collection. Addressing the root cause — such as switching to better-fitting footwear — is also an important part of long-term management.

How long can I use Numark Corn Removal Plasters for?

You can use the plasters for up to 12 weeks. If the corn has not resolved within this time, stop using the product and consult your pharmacist or GP, as there may be an underlying cause that needs professional assessment. Do not use these plasters indefinitely without reviewing whether the treatment is working.

Can I use corn removal plasters on a verruca?

No — these plasters are specifically for corns and should not be used on verrucas, warts, moles, or birthmarks. Verrucas are caused by the human papillomavirus (HPV) and require different treatment. If you're unsure whether you have a corn or a verruca, a pharmacist can help you tell the difference before you start any treatment.

What are the latest recommendations for treating corns at home?

The NHS recommends using salicylic acid products as the first-line self-care treatment for corns, alongside addressing the cause of friction — typically by wearing well-fitting shoes and using protective padding. Regular use of a pumice stone after soaking can also help manage hard skin. For persistent or painful corns, a referral to a podiatrist is advised. You can also browse our pain relief collection if foot pain is affecting your daily life.

How Should You Use Numark Corn Removal Plasters?

Using these plasters correctly makes a real difference to how quickly and safely your corn responds to treatment. Accurate placement is essential — the medicated pad must sit directly over the corn and not on the surrounding healthy skin, as salicylic acid can irritate unaffected tissue. Always wash and dry your hands and feet before you begin.

If the plaster comes loose before 48 hours, replace it with a fresh one. Do not attempt to dig out or cut the corn yourself, as this can cause injury or infection.

What Is the Correct Dose of Numark Corn Removal Plasters?

The dose is straightforward — one plaster per corn, replaced every 48 hours. Do not apply multiple plasters to the same corn simultaneously, and avoid treating more than two corns at once without pharmacist guidance. The table below summarises dosing by age group and indication.

When Is the Best Time to Use Numark Corn Removal Plasters?

There is no strict time of day requirement, but many people find it easiest to apply a fresh plaster in the evening after bathing or showering, when the skin is already clean and slightly softened. Applying at night also means the plaster has time to work undisturbed while you sleep. Just make sure the skin is completely dry before application — damp skin will prevent the plaster from adhering properly.

When you remove the plaster after 48 hours, try to do so in the morning so you can inspect the skin in good light and decide whether to reapply or give the area a short rest.

How Long Can You Use Numark Corn Removal Plasters For?

You can use these plasters for up to 12 weeks in total. Most corns respond well within 2 to 4 weeks of consistent use, but larger or deeper corns may take longer. If the corn has not improved after 12 weeks, stop using the product and consult your pharmacist or GP — there may be an underlying cause that needs professional assessment, such as a structural foot problem or footwear issue.

Once the corn has been successfully removed, focus on preventing recurrence by wearing well-fitting shoes, using protective padding on pressure points, and keeping the skin moisturised. Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

How Should You Use Numark Corn Removal Plasters?

Using these plasters correctly makes a real difference to how quickly and safely your corn responds to treatment. Accurate placement is essential — the medicated pad must sit directly over the corn and not on the surrounding healthy skin, as salicylic acid can irritate unaffected tissue. Always wash and dry your hands and feet before you begin.

If the plaster comes loose before 48 hours, replace it with a fresh one. Do not attempt to dig out or cut the corn yourself, as this can cause injury or infection.

What Is the Correct Dose of Numark Corn Removal Plasters?

The dose is straightforward — one plaster per corn, replaced every 48 hours. Do not apply multiple plasters to the same corn simultaneously, and avoid treating more than two corns at once without pharmacist guidance. The table below summarises dosing by age group and indication.

When Is the Best Time to Use Numark Corn Removal Plasters?

There is no strict time of day requirement, but many people find it easiest to apply a fresh plaster in the evening after bathing or showering, when the skin is already clean and slightly softened. Applying at night also means the plaster has time to work undisturbed while you sleep. Just make sure the skin is completely dry before application — damp skin will prevent the plaster from adhering properly.

When you remove the plaster after 48 hours, try to do so in the morning so you can inspect the skin in good light and decide whether to reapply or give the area a short rest.

How Long Can You Use Numark Corn Removal Plasters For?

You can use these plasters for up to 12 weeks in total. Most corns respond well within 2 to 4 weeks of consistent use, but larger or deeper corns may take longer. If the corn has not improved after 12 weeks, stop using the product and consult your pharmacist or GP — there may be an underlying cause that needs professional assessment, such as a structural foot problem or footwear issue.

Once the corn has been successfully removed, focus on preventing recurrence by wearing well-fitting shoes, using protective padding on pressure points, and keeping the skin moisturised. Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

What Are the Most Common Side Effects of Numark Corn Removal Plasters?

Most people tolerate these plasters well when used as directed, but some localised skin reactions are possible. The most common side effects are mild and temporary, usually resolving once you remove the plaster or complete the course of treatment.

  • Mild redness or irritation of the skin surrounding the corn
  • Slight stinging or burning sensation when the plaster is first applied
  • Temporary whitening or softening of the treated skin — this is a normal response to salicylic acid and is not a cause for concern

These effects are generally a sign that the salicylic acid is working. If they remain mild and confined to the corn itself, you can continue treatment as normal.

What Are the Less Common Side Effects of Numark Corn Removal Plasters?

Less commonly, some people experience more noticeable skin reactions, particularly if the plaster is not positioned accurately or is left on for too long. These are not dangerous in most cases, but they do warrant attention.

  • Blistering of the skin at or around the application site
  • Increased pain or tenderness in the treated area
  • Maceration (over-softening) of the surrounding healthy skin, which can appear very white and feel soggy
  • Peeling or flaking of skin beyond the corn itself

If any of these occur, remove the plaster and allow the skin to recover for at least 24 to 48 hours before considering reapplication. Repositioning the plaster more accurately over the corn may help prevent recurrence.

What Are the Serious Side Effects of Numark Corn Removal Plasters?

Serious side effects are rare when the plasters are used correctly on intact, healthy skin. However, you should seek medical advice promptly if you notice any of the following:

  • Signs of skin infection — including increasing warmth, swelling, redness spreading beyond the corn, or any discharge
  • Severe burning or pain that does not settle after removing the plaster
  • Allergic reaction — including widespread rash, itching, or swelling away from the application site

People with diabetes are at particular risk of serious complications from any skin damage to the feet, which is why this product is contraindicated in that group without medical supervision.

What Should You Do If You Experience Side Effects?

If you notice mild irritation, simply remove the plaster and rest the skin before reapplying. For more significant reactions — such as blistering, infection, or spreading redness — remove the plaster immediately and do not reapply. Contact your pharmacist or GP for advice. In the case of a suspected allergic reaction or signs of serious infection, seek medical attention promptly.

Never try to cut or dig out a corn that has become inflamed or infected. This can worsen the situation significantly and may require antibiotic treatment.

Can Numark Corn Removal Plasters Interact With Other Medicines?

Significant drug interactions with topical salicylic acid used on a small skin area are not well documented and are considered unlikely at standard OTC doses. However, you should avoid applying other keratolytic agents — such as urea creams or other salicylic acid products — to the same area at the same time, as this could increase the risk of skin irritation. If you are using any prescription topical medicines on your feet, speak to your pharmacist before using these plasters.

If you are concerned about any side effects, contact your pharmacist or GP immediately.

Patient Information Leaflet

Important - Before taking any medication, it is always important to read the Patient Information Leaflet (PIL)

Written and reviewed by our qualified team

GPhC Number: 2233073
Tarun Kumar

Reviewed by:

Tarun Kumar

Superintendent/ Clinical Lead

📖 Find out more about our team of medical content authors and how we ensure the accuracy of our content with our content guidelines.

Content last updated: 31 Mar 2025

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