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Flexitol 25% Urea Heel Balm 200g

Flexitol 25% Urea Heel Balm 200g

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  • ✔️ Softens severely cracked and thickened heel skin
  • ✔️ 25% urea delivers keratolytic and deep moisturising action
  • ✔️ Visible improvement in dry heels within days of use
  • ✔️ 200g tube provides generous supply for daily treatment
  • ✔️ Suitable for adults with chronic dry or hyperkeratotic heels

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What Is Urea Heel Balm and How Can It Help Your Feet?

 

Cracked, dry heels are more than just a cosmetic concern — they can be genuinely uncomfortable, sometimes painful, and in certain cases prone to infection if left untreated. Urea heel balm at a 25% concentration is one of the most clinically recognised topical treatments for this problem. Flexitol 25% Urea Heel Balm 200g delivers a high-strength emollient and keratolytic action directly to the skin of the heel, helping to break down hardened, thickened skin while locking in moisture. If you've tried standard moisturisers without success, this is a step up. You can browse the full range of foot care products at Cured Pharmacy to find the right option for your needs.

The NHS recognises dry skin and cracked heels as a common condition that can affect anyone, though people who spend long periods on their feet, those with certain skin conditions such as eczema or psoriasis, and people living with diabetes are particularly susceptible. The 200g tube offers a generous supply for ongoing daily use.

 

How Does Flexitol 25% Urea Heel Balm Work?

 

Urea is a naturally occurring compound found in the skin. When applied topically at therapeutic concentrations, it works through two distinct mechanisms that complement each other well.

  • Keratolytic action: At 25% concentration, urea breaks down the peptide bonds in keratin — the protein that makes up the outer layer of skin. This softens and loosens thickened, hardened skin so it can shed more easily.
  • Humectant action: Urea draws water into the stratum corneum (the outermost skin layer), increasing hydration and improving skin elasticity.
  • Emollient effect: The balm base helps to seal moisture into the skin, reducing transepidermal water loss and keeping the heel supple between applications.
  • Antimicrobial properties: Some evidence suggests urea has mild antimicrobial activity, which may help reduce the risk of secondary infection in fissured skin.

Together, these actions make it particularly effective for severely dry, thickened, or fissured heel skin where standard moisturisers simply don't penetrate deeply enough.

 

Who Should Use Flexitol 25% Urea Heel Balm?

 

This product is suitable for adults who experience persistent dryness, roughness, or cracking of the heels. It is available over the counter without a prescription. That said, it's worth knowing who benefits most — and who should seek advice first.

  • Adults with severely dry, cracked, or thickened heel skin
  • People with skin conditions such as eczema, psoriasis, or ichthyosis affecting the feet
  • Those who spend extended periods standing or walking
  • Older adults, in whom skin naturally becomes drier and less elastic over time

People with diabetes should speak to their GP or podiatrist before use, as foot care in diabetes requires careful monitoring. Similarly, if you have any open wounds, active infection, or severely broken skin on the heel, seek professional advice before applying.

 

How Does Flexitol 25% Urea Heel Balm Compare to Other Heel Treatments?

 

Feature Flexitol 25% Urea Heel Balm Standard Moisturising Foot Cream (e.g. 10% urea)
Urea concentration 25% — keratolytic and humectant 5–10% — primarily humectant
Suitable for severely cracked heels Yes Less effective for severe cases
Pack size 200g Varies (typically 75–150g)
Prescription required No — OTC No — OTC

 

Is Flexitol 25% Urea Heel Balm Suitable for Long-Term Use and How Should It Be Stored?

 

This urea heel balm can be used as part of a regular foot care routine over the long term. Once your heels have improved, many people continue using it two to three times per week as a maintenance treatment to prevent recurrence. If you also manage a skin condition such as eczema or psoriasis, you may find it useful alongside other skin care products recommended by your healthcare team.

Store the balm below 25°C, away from direct sunlight and out of reach of children. Do not use after the expiry date printed on the tube. The product is for external use only — avoid contact with eyes, mouth, and mucous membranes.

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 25% Urea Heel Balm 200g specifications
Treatment category Emollient / Keratolytic foot care
Mechanism of action Keratolytic and humectant — breaks down hardened keratin and draws moisture into the skin
Effective for Severely dry, cracked, and thickened heel skin
Suitable for Adults; consult a healthcare professional if diabetic or if skin is broken or infected
Active ingredient Urea 25%
Pack size 200g
Strength 25% urea
UK classification General Sale / OTC
Drug class Emollient / Keratolytic
Preparation Topical balm / cream
Route of administration Topical (external use only)

Specifications of Flexitol 25% Urea Heel Balm 200g

 

What Is Flexitol 25% Urea Heel Balm and What Is It Used For?

 

Flexitol 25% Urea Heel Balm is a topical emollient and keratolytic preparation containing 25% urea as its active ingredient. It is used to treat severely dry, rough, thickened, and cracked skin on the heels. Urea at this concentration works both to soften hardened skin and to restore moisture levels within the outer skin layers. The NHS describes dry skin as a very common condition that can cause the skin to feel tight, rough, or flaky — and the heels are one of the most frequently affected areas of the body. This product is available over the counter for adults without a prescription.

 

What Do You Need to Know Before Using Flexitol 25% Urea Heel Balm?

 

Before applying this balm, there are some important points to consider. Do not use it if any of the following apply to you:

  • You are allergic to urea or any other ingredient in the formulation
  • You have an active skin infection (bacterial, fungal, or viral) on the affected area — if you suspect a fungal infection, explore athlete's foot and fungal infection treatments first
  • You have open wounds or deep fissures that are bleeding
  • You are applying it to areas other than the feet without professional guidance

The following groups should seek advice from a GP, pharmacist, or podiatrist before use:

  • People with diabetes — particularly those with peripheral neuropathy or poor circulation
  • Children under 12 years of age
  • Pregnant or breastfeeding women (topical urea is generally considered low risk, but always check with your midwife or GP)
  • Anyone with a known skin condition such as psoriasis or eczema affecting the feet

Drug interactions: No clinically significant interactions are known for topically applied urea at this concentration. However, if you are using other topical preparations on the same area, speak to your pharmacist to avoid potential skin reactions.

  • No significant interactions with oral medicines are expected from topical use
  • Avoid using alongside other keratolytic agents (e.g. salicylic acid) on the same area without professional advice

 

How Should You Use Flexitol 25% Urea Heel Balm?

 

Using this balm correctly makes a real difference to how quickly you see results. Follow these steps for each application:

  1. Wash your feet with warm water and a mild soap, then dry them thoroughly — paying particular attention to the heel area.
  2. Squeeze a generous amount of balm onto your fingertips.
  3. Apply directly to the dry or cracked heel skin.
  4. Massage in using circular motions until the balm is fully absorbed.
  5. Allow to absorb before putting on socks or footwear — wearing cotton socks after application at night can help enhance absorption.
Indication Age Group Dose Frequency
Severely dry / cracked heels Adults (18+) Generous application to affected area Twice daily (morning and night)
Maintenance (once heels have improved) Adults (18+) Moderate application to heel area 2–3 times per week
Children under 12 Under 12 Not recommended without medical advice

 

What Are the Possible Side Effects of Flexitol 25% Urea Heel Balm?

 

Side effects from topical urea at 25% are generally mild and uncommon. Most people tolerate this product well. However, as with any topical preparation, some individuals may experience a reaction.

Common side effects:

  • Mild stinging or tingling sensation on first application, particularly if skin is fissured
  • Temporary redness around the application site
  • Mild itching immediately after application

Less common side effects:

  • Skin irritation or contact dermatitis in those with sensitive skin
  • Dryness or peeling if used excessively or on areas not intended for treatment
  • Allergic reaction — though rare, signs include significant redness, swelling, or blistering

If you experience a severe allergic reaction, stop using the product immediately and seek medical attention. The NHS advises that any persistent or worsening skin reaction following use of a topical product should be assessed by a healthcare professional.

 

How Should You Store Flexitol 25% Urea Heel Balm?

 

  • Store below 25°C in a cool, dry place
  • Keep away from direct sunlight and heat sources
  • Keep the tube tightly closed when not in use
  • Keep out of the reach and sight of children
  • Do not use after the expiry date printed on the tube
  • Do not freeze
  • For external use only — do not ingest

If you are managing multiple foot conditions alongside dry heels, you may also find it helpful to explore creams and ointments available at Cured Pharmacy for a broader range of topical treatment options.

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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 Flexitol 25% Urea Heel Balm online in the UK?

You can buy Flexitol 25% Urea Heel Balm 200g directly from Cured Pharmacy, a UK GPhC-registered online pharmacy, for £15.00. It is available without a prescription as an over-the-counter product. Simply add it to your basket and choose your preferred delivery option at checkout.

How does urea heel balm work on cracked heels?

Urea at 25% concentration acts as both a keratolytic and a humectant. It breaks down the hardened keratin in thickened heel skin while simultaneously drawing moisture into the outer skin layers. This dual action softens, smooths, and repairs cracked heel skin more effectively than standard moisturisers alone.

How do I use Flexitol 25% Urea Heel Balm step by step?

Wash and dry your feet thoroughly, then apply a generous amount of the balm to the heel area and massage in using circular motions until absorbed. Use twice daily — morning and night — for best results. Wearing cotton socks after the evening application can help the balm work more effectively overnight.

How long does it take for Flexitol Heel Balm to work?

Many people notice their skin 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 use as a maintenance treatment two to three times per week can help prevent the problem returning.

Can I use Flexitol Heel Balm if I have diabetes?

People with diabetes are particularly prone to dry and cracked feet due to reduced circulation and nerve changes. However, you should consult your GP, podiatrist, or diabetes care team before using any foot cream if you have diabetic neuropathy, peripheral vascular disease, or any foot ulcers. You can also find relevant products in our diabetes monitoring section.

What are the side effects of Flexitol 25% Urea Heel Balm?

Side effects are uncommon but may include mild stinging, temporary redness, or itching — particularly on first application or if the skin is fissured. Rarely, some people with sensitive skin may experience contact dermatitis. If irritation persists or worsens, stop using the product and speak to your pharmacist or GP.

Is Flexitol Heel Balm safe to use during pregnancy?

Topical urea products are generally considered low risk during pregnancy when used as directed on the feet, as systemic absorption through intact skin is minimal. However, you should always check with your midwife or GP before starting any new skincare product during pregnancy or while breastfeeding. Do not apply to broken or infected skin.

What is the difference between 25% urea and lower-strength urea creams?

Lower-strength urea creams (typically 5–10%) work primarily as moisturisers and are suitable for mild dryness. At 25%, urea has a significantly stronger keratolytic action, making it more effective for severely thickened, hardened, or cracked heel skin. If your heels are only mildly dry, a lower-strength product may be sufficient.

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

Flexitol 25% Urea Heel Balm is specifically formulated for use on the heels and feet. While urea-based products are used on other body areas in clinical practice, you should not apply this high-strength formulation to the face, genitals, or broken skin without professional guidance. Speak to your pharmacist if you are unsure.

How long can I use Flexitol 25% Urea Heel Balm for?

This product can be used as part of a long-term foot care routine. Once your heels have improved, you can reduce application to a maintenance frequency of two to three times per week. There is no defined maximum duration of use, but if your condition does not improve after four weeks of regular use, consult your pharmacist or GP.

What are the alternatives to Flexitol 25% Urea Heel Balm?

Alternatives include other urea-based foot creams at varying concentrations, salicylic acid-based keratolytic preparations, and general emollient foot creams. For mild dryness, a standard moisturising foot cream may suffice. You can explore a wider range of options in our foot care collection to compare products.

Does Flexitol Heel Balm help with athlete's foot or fungal infections?

No — Flexitol 25% Urea Heel Balm is an emollient and keratolytic, not an antifungal. It will not treat athlete's foot or fungal nail infections. If you suspect a fungal infection alongside dry skin, you will need a separate antifungal treatment. Do not apply this balm to actively infected skin without medical advice.

What happens if I accidentally get Flexitol Heel Balm in my eyes?

If the product comes into contact with your eyes, rinse immediately and thoroughly with clean, lukewarm water for several minutes. If irritation, redness, or discomfort persists after rinsing, seek medical attention promptly. This product is for external use on the feet only and should be kept away from eyes and mucous membranes.

Is Flexitol 25% Urea Heel Balm suitable for children?

This product is not recommended for children under 12 years of age without medical advice. Children's skin is more sensitive, and a lower-strength urea product or a paediatric emollient may be more appropriate. Always consult a GP or pharmacist before using high-strength keratolytic products on children.

What are the latest findings on urea for dry skin treatment?

Urea has been used in dermatology for decades and remains a well-established ingredient in the management of dry and hyperkeratotic skin conditions. Clinical evidence consistently supports its dual keratolytic and humectant properties, and it is referenced in the BNF as a recognised treatment for dry skin conditions. No new safety concerns have emerged from recent literature for topical use at standard concentrations.

How Should You Use Flexitol 25% Urea Heel Balm?

Using this balm correctly is straightforward, but a little preparation goes a long way. Clean, dry skin absorbs the active ingredient far more effectively than damp or dirty skin, so always start with freshly washed feet. Follow these steps each time you apply:

Avoid applying to broken, bleeding, or actively infected skin without first seeking advice from your pharmacist or GP. This product is for external use on the feet only.

What Is the Correct Dose of Flexitol 25% Urea Heel Balm?

There is no fixed measured dose for topical emollients — the right amount is enough to cover the affected area generously without leaving a thick, unabsorbed residue. As a guide, a pea-to-hazelnut-sized amount per heel is usually sufficient for each application, though more may be needed for very dry or thickened skin.

When Is the Best Time to Use Flexitol 25% Urea Heel Balm?

The most effective routine is to apply the balm twice daily — once in the morning after washing your feet, and once at night just before bed. The evening application is particularly valuable. Applying the balm at night and covering your feet with cotton socks creates a gentle occlusive effect, allowing the urea to work on the skin for several hours without being rubbed off by footwear or activity. Consistency matters more than timing, so find a routine that fits your day and stick to it.

How Long Can You Use Flexitol 25% Urea Heel Balm For?

This product is suitable for ongoing use as part of a regular foot care routine. Most people see meaningful improvement in heel condition within two to four weeks of twice-daily use. Once your heels have softened and healed, you can reduce application to a maintenance frequency of two to three times per week to prevent the problem returning. If you do not see any improvement after four weeks of consistent use, or if your condition worsens, speak to your pharmacist or GP — there may be an underlying cause that needs assessment.

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 25% Urea Heel Balm?

Most people tolerate Flexitol 25% Urea Heel Balm well, and side effects are generally mild and short-lived. The most frequently reported reactions occur at the site of application, particularly during the first few uses or when the skin is significantly fissured.

  • Mild stinging or tingling sensation immediately after application
  • Temporary redness around the treated area
  • Mild itching at the application site
  • A slight warming sensation on the skin

These reactions typically settle within a few minutes of application and tend to diminish as the skin condition improves with regular use. If stinging is particularly uncomfortable, try applying to skin that has been thoroughly dried and is not actively cracked or bleeding.

What Are the Less Common Side Effects of Flexitol 25% Urea Heel Balm?

Less commonly, some individuals — particularly those with sensitive skin — may experience a more pronounced local reaction. These are not expected in most users but are worth being aware of.

  • Contact dermatitis — redness, swelling, or a rash at the application site
  • Skin peeling or flaking, particularly if the product is applied too frequently or to areas not intended for treatment
  • Dryness or tightness if the balm is used on skin types that react adversely to high-concentration urea

If you notice any of these reactions, reduce the frequency of application and monitor your skin. If symptoms persist beyond a few days, stop using the product and consult your pharmacist.

What Are the Serious Side Effects of Flexitol 25% Urea Heel Balm?

Serious side effects from topically applied urea at 25% are rare. However, a small number of people may experience an allergic reaction to one or more ingredients in the formulation. Signs of a serious allergic reaction include:

  • Significant swelling, blistering, or hives at or beyond the application site
  • Intense burning or pain that does not settle
  • Signs of systemic allergic reaction — such as difficulty breathing, swelling of the face or throat, or dizziness (seek emergency medical help immediately if these occur)

Systemic absorption of urea through intact skin is minimal at this concentration, so systemic side effects are not expected with normal use.

What Should You Do If You Experience Side Effects?

If you experience mild irritation, reduce the frequency of application and ensure you are applying to clean, dry skin only. For more significant reactions, stop using the product immediately. Rinse the affected area with cool water and seek advice from your pharmacist or GP. Do not attempt to treat a suspected allergic reaction at home — seek medical attention promptly. Always read the product label and patient information before use.

Can Flexitol 25% Urea Heel Balm Interact With Other Medicines?

No clinically significant drug interactions are known for topically applied urea at this concentration. Systemic absorption through intact skin is very low, making interactions with oral medicines unlikely. However, if you are using other topical preparations on the same area of skin — such as corticosteroid creams, antifungal treatments, or other keratolytic agents like salicylic acid — speak to your pharmacist before combining them. Using multiple active topical products on the same area simultaneously may increase the risk of local skin irritation.

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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