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Flexitol Heel Balm

Flexitol Heel Balm

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  • ✔️ Contains 25% urea to soften severely cracked heels
  • ✔️ Repairs dry, thickened heel skin with twice-daily use
  • ✔️ Keratolytic action removes hardened dead skin cells
  • ✔️ Suitable for adults including those with very dry skin
  • ✔️ Humectant formula locks moisture into the heel skin

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What Is Flexitol Heel Balm and Does It Work for Cracked Heels?

 

Cracked heels are more common than you might think. The NHS notes that dry skin on the feet — particularly around the heels — can become uncomfortable and, in some cases, painful if left untreated. Flexitol Heel Balm is a widely used, over-the-counter emollient containing 25% urea, specifically formulated to target the thick, hardened skin that builds up on heels. It is available without a prescription and is suitable for most adults looking for an effective, no-fuss solution to dry, rough, or cracked heel skin. You can browse the full range of foot care products at Cured Pharmacy's foot care collection.

Urea is a well-established ingredient in dermatology. It has both keratolytic (skin-softening) and humectant (moisture-retaining) properties, making it particularly suited to areas of the body where skin tends to thicken and dry out. At a concentration of 25%, it is one of the higher-strength urea formulations available without a prescription in the UK.

 

How Does Flexitol Heel Balm Work on Dry Skin?

 

The mechanism behind Flexitol Heel Balm is straightforward but clinically meaningful. Urea works in two key ways simultaneously:

  • Keratolytic action: At concentrations of 20% and above, urea breaks down the protein bonds in hardened keratin — the structural protein responsible for thickened, calloused skin — helping to loosen and remove dead skin cells.
  • Humectant action: Urea draws water from the deeper layers of the skin (the dermis) up into the outer layer (the epidermis), improving hydration and skin flexibility.
  • Emollient effect: The balm base helps to seal moisture into the skin surface, reducing transepidermal water loss and preventing further drying.
  • Antimicrobial properties: Urea has mild antimicrobial activity, which may help reduce the risk of secondary infection in cracked skin, though it is not a treatment for active infection.

Together, these actions make Flexitol Heel Balm a clinically logical choice for managing dry, cracked heels rather than simply masking the problem.

 

Who Should Use Flexitol Heel Balm?

 

This product is suitable for a wide range of people. It is particularly useful if you spend long hours on your feet, wear open-backed footwear, or simply have naturally dry skin. That said, it is worth knowing who benefits most:

  • Adults with dry, rough, or cracked heels caused by environmental factors or prolonged standing
  • People with skin conditions such as eczema or psoriasis affecting the feet (seek GP advice first)
  • Older adults, in whom skin naturally produces less sebum and tends to dry out more quickly
  • Athletes or those who walk or run regularly and experience heel calluses

It is not recommended for use on infected, inflamed, or broken skin without medical advice. Children under 12 should only use this product under the guidance of a healthcare professional.

 

How Does Flexitol Heel Balm Compare to Other Heel Creams?

 

Feature Flexitol Heel Balm Eucerin Intensive Foot Cream
Urea concentration 25% 10%
Suitable for severely cracked heels Yes Mild to moderate dryness
Prescription required No (OTC) No (OTC)
Keratolytic action Yes (high-strength) Mild

 

Is Flexitol Heel Balm Suitable for People With Diabetes?

 

Foot care is especially important for people with diabetes. The NHS advises that people with diabetes are at higher risk of foot complications, including infections and slow-healing wounds, due to reduced circulation and nerve sensitivity. If you have diabetes and are considering using Flexitol Heel Balm, speak to your GP or podiatrist first. While urea-based emollients are commonly used in diabetic foot care, professional guidance ensures the product is appropriate for your specific situation. For those managing related skin concerns, our skin care collection includes a range of emollients and moisturisers.

Store Flexitol Heel Balm below 25°C, away from direct sunlight, and keep it out of reach of children. Do not use past the expiry date printed on the packaging.

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.

Flexitol Heel Balm specifications
Treatment category Foot care / Emollient
Mechanism of action Keratolytic and humectant (urea 25%)
Effective for Dry, cracked, and rough heels
Suitable for Adults; children under 12 on medical advice only
Active ingredient Urea 25%
Pack sizes 112g, 500g
UK classification General Sale (GSL)
Drug class Emollient / Keratolytic
Preparation Cream/balm
Route of administration Topical (cutaneous)

Specifications of Flexitol Heel Balm

 

What Is Flexitol Heel Balm and What Is It Used For?

 

Flexitol Heel Balm is a topical emollient and keratolytic preparation containing 25% urea. It is used to treat dry, rough, thickened, and cracked skin on the heels and feet. Urea is a naturally occurring substance found in the skin that helps maintain hydration and skin barrier function. When skin becomes severely dry — as often happens on the heels due to pressure, friction, and reduced sebaceous gland activity in that area — urea levels drop, and the skin loses its ability to retain moisture effectively. Applying a high-concentration urea balm replenishes this and actively works to soften and remove hardened skin.

The product is classified as a General Sale (GSL) medicine in the UK, meaning it can be purchased without a prescription from pharmacies, supermarkets, and online retailers. It is not a cosmetic — it contains an active pharmaceutical ingredient at a therapeutic concentration.

 

What Do You Need to Know Before Using Flexitol Heel Balm?

 

Before using this product, read the following carefully. Most people tolerate Flexitol Heel Balm well, but there are some situations where caution is needed.

Do not use Flexitol Heel Balm if you:

  • Are allergic to urea or any other ingredient in the formulation
  • Have an active skin infection (bacterial, fungal, or viral) on the affected area — if you suspect a fungal infection, see our athlete's foot and fungal infections range for appropriate treatment first
  • Have open wounds or severely broken skin on the heel without medical advice
  • Are using it on a child under 12 without healthcare professional guidance

Use with caution if you:

  • Have diabetes — always consult your GP or podiatrist before use
  • Have peripheral vascular disease or poor circulation in the feet
  • Have a known skin condition such as psoriasis or eczema affecting the feet
  • Are pregnant or breastfeeding — consult your GP or midwife before use

Known drug interactions:

  • No significant systemic drug interactions are known for topically applied urea at this concentration
  • Avoid using alongside other keratolytic agents (e.g. salicylic acid preparations) on the same area without medical advice, as this may cause excessive skin irritation

 

How Should You Use Flexitol Heel Balm Correctly?

 

Using Flexitol Heel Balm correctly makes a real difference to how quickly you see results. Follow these steps for best effect:

  1. Wash your feet with warm water and a mild soap, then dry thoroughly — paying particular attention to the heel area and between the toes.
  2. Apply a generous amount of Flexitol Heel Balm directly to the dry or cracked heel skin.
  3. Massage the balm in using circular motions until it is fully absorbed.
  4. Allow the product to absorb before putting on socks or footwear.
  5. Repeat twice daily — once in the morning and once at night — for best results.
  6. For very cracked heels, applying at night and covering with cotton socks can enhance absorption overnight.
Indication Age Group Dose Frequency
Dry, cracked heels Adults (18+) Generous application to affected area Twice daily
Maintenance (once heels improve) Adults (18+) Moderate application Once daily
Children under 12 Under 12 Only on medical advice As directed by healthcare professional

 

What Are the Possible Side Effects of Flexitol Heel Balm?

 

Side effects with topical urea products are generally mild and uncommon. Most people use Flexitol Heel Balm without any problems at all. However, as with any product applied to the skin, reactions can occasionally occur.

Common side effects:

  • Mild stinging or tingling immediately after application, particularly on cracked or broken skin
  • Temporary redness at the application site
  • Mild itching during the first few days of use

Less common side effects:

  • Skin irritation or a burning sensation that persists beyond the first few minutes
  • Allergic contact dermatitis (rash, swelling, or blistering) — stop use immediately and seek medical advice if this occurs
  • Excessive skin peeling if used too frequently or in combination with other exfoliating products

If you experience a severe allergic reaction — including swelling of the face, lips, or throat, or difficulty breathing — seek emergency medical attention immediately. This is rare but serious.

 

How Should You Store Flexitol Heel Balm?

 

Correct storage helps maintain the product's effectiveness and safety throughout its shelf life.

  • Store below 25°C in a cool, dry place
  • Keep away from direct sunlight and heat sources
  • Keep the cap tightly closed when not in use
  • Keep out of reach and sight of children
  • Do not use after the expiry date printed on the tube or packaging
  • Do not freeze
  • Do not store in the bathroom, where humidity and temperature fluctuations can affect the formulation

If you are managing multiple skin concerns alongside dry heels, you may find it helpful to explore our creams and ointments collection for complementary products recommended by our pharmacy team.

Written and reviewed by our qualified team

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 Flexitol Heel Balm online in the UK?

You can buy Flexitol Heel Balm online from Cured Pharmacy, a GPhC-registered UK online pharmacy. It is available without a prescription as an over-the-counter product. Browse our full foot care collection for more options.

How does Flexitol Heel Balm work in the body?

Flexitol Heel Balm contains 25% urea, which acts as both a keratolytic and a humectant. The keratolytic action breaks down hardened, thickened skin cells on the heel, while the humectant action draws moisture into the outer layers of the skin. Together, these effects soften and repair cracked, dry heel skin over time.

How do I use Flexitol Heel Balm step by step?

Wash and dry your feet thoroughly, then apply a generous amount of Flexitol Heel Balm to the affected heel area and massage in well. Use twice daily — morning and night — for best results. For very cracked heels, applying at night and wearing cotton socks overnight can improve absorption.

How long does Flexitol Heel Balm take to show results?

Many people notice their heels feeling softer within a few days of consistent twice-daily use. Severely cracked or thickened heels may take two to four weeks of regular application to show significant improvement. Continuing to use the balm once heels have improved helps prevent the dryness from returning.

What is the best time to apply Flexitol Heel Balm?

The most effective routine is to apply Flexitol Heel Balm twice daily — once in the morning after washing your feet, and once at night before bed. The overnight application is particularly useful because the skin has time to absorb the urea without the friction of walking or wearing shoes. Wearing cotton socks after the evening application can further enhance results.

Can I use Flexitol Heel Balm if I have diabetes?

People with diabetes should consult their GP or podiatrist before using Flexitol Heel Balm. The NHS recommends that people with diabetes check their feet daily and seek professional advice for any foot problems, as reduced circulation and nerve sensitivity can increase the risk of complications. Urea-based emollients are commonly used in diabetic foot care, but professional guidance is important.

Is Flexitol Heel Balm safe to use during pregnancy?

Topical urea products are generally considered low risk during pregnancy when applied to intact skin as directed, as systemic absorption is minimal. However, you should always speak to your GP or midwife before introducing any new product during pregnancy or breastfeeding. They can confirm whether it is appropriate for your individual circumstances.

What are the side effects of Flexitol Heel Balm?

Side effects are uncommon but may include mild stinging, temporary redness, or itching at the application site — particularly if the skin is cracked or broken. Allergic contact dermatitis is rare but possible; if you develop a rash, swelling, or persistent irritation, stop use and consult a pharmacist or GP. Most people tolerate the product well with no adverse effects.

How do I manage irritation caused by Flexitol Heel Balm?

If you experience mild stinging after application, this is usually temporary and settles within a few minutes — it is more common when the skin is cracked or broken. Reducing application frequency to once daily until the skin heals can help. If irritation is persistent or severe, stop using the product and speak to your pharmacist.

Who is eligible to use Flexitol Heel Balm?

Flexitol Heel Balm is suitable for most adults with dry, rough, or cracked heels. It is not recommended for children under 12 without healthcare professional guidance, and people with diabetes, peripheral vascular disease, or active skin infections should seek medical advice before use. It is available over the counter without a prescription for eligible adults.

Can I use Flexitol Heel Balm on other parts of my feet?

Yes, Flexitol Heel Balm can be applied to other areas of the feet affected by dry or thickened skin, such as the balls of the feet or the sides of the toes. Avoid applying it between the toes, as the moist environment there can increase the risk of irritation. Do not apply to the face or other body areas unless directed by a healthcare professional.

What happens if I miss an application of Flexitol Heel Balm?

Missing a single application will not cause any harm — simply resume your normal routine at the next scheduled time. Do not apply a double amount to compensate for a missed application. Consistency over time is what delivers results with emollient treatments like this one.

What are alternatives to Flexitol Heel Balm?

Alternatives include other urea-based emollients such as Eucerin Intensive Foot Cream (10% urea) for milder dryness, or CCS Foot Cream. For people with fungal infections contributing to dry, flaking skin, treating the underlying infection first is important — explore our athlete's foot and fungal infections range for suitable options. Your pharmacist can advise on the most appropriate product for your needs.

How long can you keep using Flexitol Heel Balm?

Flexitol Heel Balm can be used long term as a maintenance emollient once the initial cracking and dryness has resolved. Many people continue to use it daily or a few times a week to prevent heels from drying out again, particularly during winter months or periods of increased physical activity. There is no recommended maximum duration for use in healthy adults.

What does the latest research say about urea for cracked heels?

Urea has been used in dermatology for decades and is well supported by clinical evidence as an effective keratolytic and moisturising agent for dry skin conditions. The BNF recognises urea as an established emollient ingredient, and it is widely recommended by podiatrists and dermatologists for the management of hyperkeratotic (thickened) skin on the feet. Higher concentrations such as 25% are specifically indicated for more severe dryness and callus formation.

How Should You Use Flexitol Heel Balm?

Using Flexitol Heel Balm correctly is straightforward, but a consistent routine makes a significant difference to how quickly your heels improve. Always apply to clean, dry skin for the best absorption. Follow these steps each time you use the product:

Avoid applying the balm between the toes, as the naturally moist environment there can increase the risk of irritation. Do not apply to broken, infected, or inflamed skin without first seeking medical advice.

What Is the Correct Dose of Flexitol Heel Balm?

There is no fixed measured dose for topical emollients — the amount used depends on the size of the area being treated and the severity of dryness. As a general guide, a pea-to-hazelnut-sized amount per heel is sufficient for maintenance use, while more severely cracked heels may require a more generous application. The table below summarises recommended use by indication and age group.

When Is the Best Time to Use Flexitol Heel Balm?

The most effective routine is to apply Flexitol Heel Balm twice daily — once in the morning after washing your feet, and once at night before bed. The evening application is particularly valuable because the skin is undisturbed during sleep, allowing the urea to work without the friction of walking or wearing shoes. Applying at night and covering with cotton socks is a well-recognised technique for maximising the softening effect of high-concentration urea products.

If you can only manage one application per day, the evening is the better choice. Consistency matters more than timing — applying at the same time each day helps build a habit and ensures the skin receives regular treatment.

How Long Can You Use Flexitol Heel Balm For?

Flexitol Heel Balm can be used safely over the long term. Once your heels have improved, many people reduce to a once-daily maintenance application to prevent dryness from returning — particularly during winter months, when central heating and cold weather accelerate moisture loss from the skin. There is no recommended maximum duration of use for healthy adults.

If your heels have not improved after four to six weeks of consistent twice-daily use, or if the skin becomes painful, infected, or significantly worse, stop using the product and consult your GP or a podiatrist. People with diabetes should have their feet reviewed regularly by a healthcare professional regardless of whether they are using an emollient.

Do not exceed the recommended dose. If in doubt, speak to your pharmacist.

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What Are the Most Common Side Effects of Flexitol Heel Balm?

Most people use Flexitol Heel Balm without experiencing any side effects at all. When reactions do occur, they are usually mild and temporary. The most commonly reported effects are related to the keratolytic action of urea on sensitive or broken skin.

  • Mild stinging or tingling immediately after application, particularly on cracked or broken skin
  • Temporary redness at the application site
  • Mild itching during the first few days of use as the skin adjusts
  • A slight cooling sensation after application

These effects typically resolve within a few minutes and tend to diminish as the skin heals and becomes less broken over the first week of use.

What Are the Less Common Side Effects of Flexitol Heel Balm?

Less commonly, some people may experience more noticeable skin reactions. These are not typical but are worth being aware of before you start using the product.

  • Persistent burning or stinging that does not settle within a few minutes of application
  • Increased skin peeling or flaking, particularly if used alongside other exfoliating products
  • Dryness or tightness of the skin around the application area
  • Skin discolouration at the site of application (rare)

If any of these effects are bothersome or do not resolve after a few days, reduce the frequency of application to once daily and monitor the skin. If symptoms persist, stop use and consult a pharmacist.

What Are the Serious Side Effects of Flexitol Heel Balm?

Serious side effects are rare with topically applied urea at this concentration, as systemic absorption through intact skin is minimal. However, allergic contact dermatitis can occasionally occur in people who are sensitive to urea or other ingredients in the formulation.

Signs of a serious allergic reaction include:

  • Significant swelling, blistering, or weeping at the application site
  • Spreading rash beyond the area of application
  • Swelling of the face, lips, tongue, or throat
  • Difficulty breathing or swallowing
  • Dizziness or feeling faint

If you experience any of these symptoms, stop using the product immediately and seek emergency medical attention. Call 999 or go to your nearest A&E department.

What Should You Do If You Experience Side Effects?

For mild side effects such as temporary stinging or redness, no specific action is usually needed — simply continue using the product as directed and monitor whether the reaction settles. If irritation is more persistent, try reducing to once-daily application until the skin has had time to adjust. Applying to fully dry skin (rather than damp skin) can also reduce the likelihood of stinging.

For any side effect that concerns you, or that does not improve within a few days of reducing the application frequency, stop using the product and speak to your pharmacist or GP. They can assess whether the reaction is related to the product or to an underlying skin condition that may need separate treatment.

Can Flexitol Heel Balm Interact With Other Medicines?

No significant systemic drug interactions are known for topically applied urea at the concentration found in Flexitol Heel Balm. Because absorption through the skin is minimal, interactions with oral or systemic medicines are not expected. However, using Flexitol Heel Balm at the same time as other keratolytic agents — such as salicylic acid preparations — on the same area of skin is not recommended without medical advice, as this combination may cause excessive skin irritation or peeling.

Always tell your pharmacist about all products you are currently using, including other topical preparations, before starting Flexitol Heel Balm.

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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