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Cocois 100g Coconut oil (now as Sebco Ointment)

Cocois 100g Coconut oil (now as Sebco Ointment)

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  • ✔️ Targets scalp psoriasis and seborrhoeic dermatitis directly
  • ✔️ Combines coal tar, salicylic acid, and sulphur in one ointment
  • ✔️ Softens and lifts thick scalp scales with each application
  • ✔️ Suitable for adults and young people aged 12 and over
  • ✔️ Coconut oil base soothes and moisturises the scalp simultaneously

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What Is Sebco Ointment Scalp Treatment?

 

If you have been dealing with a persistently flaky, itchy, or scaly scalp, you are not alone. Scalp psoriasis and seborrhoeic dermatitis are two of the most common scalp conditions seen in UK pharmacies, and finding a treatment that actually works can feel like a long road. Sebco ointment scalp treatment — formerly known as Cocois — is a well-established, clinically recognised topical preparation designed specifically for these conditions. Available in a 100g pack, it combines three active ingredients in a soothing coconut oil base to tackle scaling at the source. You can browse our full range of creams and ointments if you are looking for other topical treatments alongside this one.

The product was previously sold under the Cocois brand name, but the formulation itself has not changed. Whether you knew it as Cocois or are discovering it for the first time as Sebco, you are getting the same trusted combination that dermatologists and GPs have recommended for decades. It is available over the counter, meaning you do not need a prescription to purchase it.

 

How Does Sebco Ointment Work on the Scalp?

 

Sebco Ointment works through a combination of three active ingredients, each playing a distinct role in clearing the scalp:

  • Coal tar solution 12% — slows down the rapid overproduction of skin cells that causes the thick, scaly plaques associated with psoriasis. It also has anti-inflammatory and antipruritic (anti-itch) properties.
  • Salicylic acid 2% — acts as a keratolytic agent, meaning it softens and breaks down the bonds holding dead skin cells together, making scales easier to lift and remove.
  • Precipitated sulphur 4% — has antifungal and antibacterial properties, which are particularly useful in seborrhoeic dermatitis, where the yeast Malassezia plays a role in driving inflammation.
  • Coconut oil base — helps the active ingredients penetrate the scalp while simultaneously moisturising and softening the skin beneath the scales.

Together, these ingredients work to reduce scaling, calm inflammation, and restore a healthier scalp environment. It is a multi-action approach rather than a single-target one — which is part of why it has remained a go-to option for so long.

 

Who Should Use Sebco Ointment?

 

Sebco Ointment is suitable for adults and children over 12 years of age who are experiencing scalp conditions characterised by scaling, flaking, or thickened skin. It is particularly well suited to:

  • Adults with scalp psoriasis — especially where thick, adherent plaques have built up
  • People with seborrhoeic dermatitis of the scalp, including dandruff that has not responded to standard anti-dandruff shampoos
  • Those who have been advised by a GP or dermatologist to use a coal tar-based scalp preparation
  • Patients looking for an over-the-counter option before or between GP appointments

It is not suitable for use on acutely inflamed, broken, or infected skin. If your scalp is weeping, crusted, or showing signs of infection, speak to your GP before using this product. It should also not be applied to the face or used near the eyes.

 

How Does Sebco Ointment Compare to Other Scalp Treatments?

 

Feature Sebco Ointment (Cocois) Coal Tar Shampoo (e.g. T/Gel)
Active ingredients Coal tar, salicylic acid, sulphur Coal tar extract only
Application method Applied directly to scalp, left on Used as a shampoo, rinsed off
Best for Thick scaling, psoriasis plaques Mild dandruff, maintenance
Contact time 1 hour to overnight A few minutes during washing

 

Is Sebco Ointment Suitable for Long-Term Use and How Should It Be Stored?

 

Sebco ointment scalp treatment can be used regularly as part of an ongoing scalp care routine, but it is worth reviewing your use with a pharmacist or GP if you find you need it continuously over a long period. Persistent or worsening scalp conditions may need further investigation. If you are also managing other skin concerns, our skin care collection includes a range of products that may complement your routine.

Store Sebco Ointment below 25°C, away from direct heat and sunlight. Keep the lid tightly closed when not in use, and always store it out of the reach and sight of children. Do not use the product after 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.

Sebco Ointment (Cocois) 100g specifications
Treatment category Scalp disorders — psoriasis, seborrhoeic dermatitis
Active ingredients Coal tar solution 12%, salicylic acid 2%, precipitated sulphur 4%
Base Coconut oil
Mechanism of action Keratolytic, antimitotic, anti-inflammatory, antifungal
Suitable for Adults and children over 12 years
Pack size 100g
UK classification General Sale / Pharmacy (P) medicine
Drug class Topical antipsoriatic / keratolytic
Preparation Ointment
Route of administration Topical (scalp)

Specifications of Sebco Ointment (Cocois) 100g

 

What Is Sebco Ointment and What Is It Used For?

 

Sebco Ointment — previously known as Cocois — is a topical scalp preparation used to treat scalp psoriasis and seborrhoeic dermatitis. It contains three active ingredients: coal tar solution 12%, salicylic acid 2%, and precipitated sulphur 4%, all suspended in a coconut oil base. The ointment works by softening and removing the thick, scaly skin that builds up on the scalp in these conditions, while also reducing inflammation and slowing abnormal skin cell turnover. It is available over the counter for adults and children aged 12 and over.

Scalp psoriasis affects around 1.8 million people in the UK, according to the NHS, and seborrhoeic dermatitis is one of the most common skin conditions seen in primary care. Sebco ointment scalp treatment offers a practical, pharmacist-recommended option for managing both. If you are also dealing with hair thinning related to scalp inflammation, you may find our hair care collection useful alongside this treatment.

 

What Do You Need to Know Before Using Sebco Ointment?

 

Before using Sebco Ointment, read the following carefully. Do not use this product if any of the contraindications below apply to you.

Do not use Sebco Ointment if you:

  • Are allergic to coal tar, salicylic acid, sulphur, coconut oil, or any other ingredient in the formulation
  • Have acutely inflamed, broken, infected, or weeping skin on the scalp
  • Are applying it to the face, genitals, or mucous membranes
  • Are under 12 years of age (unless directed by a doctor)
  • Are pregnant or breastfeeding, without first consulting your GP or pharmacist

Warnings and precautions:

  • Avoid contact with the eyes — if contact occurs, rinse thoroughly with water
  • Coal tar can increase photosensitivity; avoid prolonged sun exposure to treated areas
  • The ointment may stain hair, clothing, and bedding — use old towels and pillowcases during treatment
  • Do not use near open flames or heat sources — the coconut oil base is flammable
  • If your condition worsens or does not improve after 4 weeks, seek medical advice

Known drug interactions:

  • No clinically significant systemic drug interactions are known when used topically as directed
  • Avoid using alongside other topical preparations on the same area without pharmacist guidance

 

How Should You Use Sebco Ointment?

 

Always use Sebco Ointment exactly as directed on the label or as advised by your pharmacist or GP. The ointment is for external use on the scalp only.

  1. Warm the ointment slightly by holding the tube in your hands for a minute — this makes it easier to apply.
  2. Part your hair into sections to expose the scalp.
  3. Apply a small amount of ointment directly onto the scalp (not the hair shafts) and rub in gently.
  4. Leave on for at least one hour. For stubborn or thick scaling, it can be left on overnight.
  5. Cover with a shower cap if leaving overnight to protect bedding.
  6. Shampoo the hair thoroughly to remove the ointment — you may need to shampoo twice.
  7. Repeat once or twice weekly, or as directed by your pharmacist or GP.
Indication Age Group Dose Frequency
Scalp psoriasis Adults & children 12+ Apply to affected scalp areas Once or twice weekly
Seborrhoeic dermatitis Adults & children 12+ Apply to affected scalp areas Once or twice weekly
Under 12 years Children under 12 Only under medical supervision As directed by GP

 

What Are the Possible Side Effects of Sebco Ointment?

 

Like all medicines, Sebco Ointment can cause side effects, although not everyone experiences them. If you notice any unexpected reactions, stop using the product and speak to your pharmacist or GP.

Common side effects:

  • Mild skin irritation or redness at the application site
  • Temporary staining of hair, skin, or fabrics
  • A strong smell from the coal tar component

Less common side effects:

  • Folliculitis (inflammation of hair follicles) — particularly if the ointment is left on for extended periods
  • Increased sensitivity to sunlight (photosensitivity) on treated areas
  • Allergic contact dermatitis — if you develop a rash, swelling, or blistering, stop use immediately and seek medical advice

Serious allergic reactions (anaphylaxis) are rare but possible. If you experience difficulty breathing, swelling of the face or throat, or a severe rash, seek emergency medical attention immediately.

 

How Should You Store Sebco Ointment?

 

Correct storage helps maintain the product's effectiveness and safety throughout its shelf life. Our skin care range includes other topical treatments that share similar storage requirements.

  • Store below 25°C in a cool, dry place
  • Keep away from direct sunlight and heat sources
  • Keep the cap tightly closed after each use
  • Do not store in a bathroom or near a sink where humidity is high
  • Keep out of the reach and sight of children
  • Do not use after the expiry date printed on the tube or carton
  • Do not dispose of medicines via wastewater or household waste — return unused product to your pharmacy

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 Sebco ointment online in the UK?

You can buy Sebco Ointment (formerly Cocois) 100g directly from Cured Pharmacy, a GPhC-registered UK online pharmacy. It is available without a prescription as an over-the-counter scalp treatment. Simply add it to your basket and it will be dispatched from our registered pharmacy.

Is Sebco ointment the same as Cocois?

Yes — Sebco Ointment is the current brand name for the product previously sold as Cocois. The active ingredients and formulation remain identical: coal tar solution 12%, salicylic acid 2%, and precipitated sulphur 4% in a coconut oil base. Only the name has changed.

What conditions does Sebco ointment treat?

Sebco Ointment is used to treat scalp psoriasis and seborrhoeic dermatitis — two common conditions that cause scaling, flaking, and itching of the scalp. It can also help with stubborn dandruff that has not responded to standard anti-dandruff shampoos. If you are unsure whether it is right for your condition, speak to your pharmacist.

How do I apply Sebco ointment step by step?

Warm the tube in your hands, part your hair into sections, and apply the ointment directly to the scalp. Leave it on for at least one hour — or overnight for thicker scaling — then shampoo off thoroughly, repeating the shampoo if needed. Use once or twice a week, or as directed by your pharmacist or GP.

How long does Sebco ointment take to work?

Some people notice a reduction in scaling after just a few applications, but for more established scalp psoriasis or seborrhoeic dermatitis, it may take several weeks of regular use to see a meaningful improvement. If there is no improvement after four weeks, consult your GP or pharmacist for further advice.

What are the side effects of Sebco ointment?

The most common side effects include mild skin irritation, redness at the application site, and temporary staining of hair or fabrics from the coal tar. Less commonly, folliculitis or increased sun sensitivity may occur. If you develop a severe rash, swelling, or difficulty breathing, stop use immediately and seek medical attention.

Can I use Sebco ointment if I am pregnant or breastfeeding?

You should consult your GP or pharmacist before using Sebco Ointment during pregnancy or while breastfeeding. Coal tar-containing preparations are generally used with caution in these situations, and a healthcare professional can advise on the safest option for you. Do not self-treat without seeking guidance first.

Is Sebco ointment suitable for children?

Sebco Ointment is suitable for adults and young people aged 12 and over. For children under 12, it should only be used under the direct supervision of a doctor. Always keep the product out of the reach of children regardless of age.

Can Sebco ointment stain my hair or clothes?

Yes — the coal tar in Sebco Ointment can temporarily stain hair (particularly lighter or bleached hair), as well as clothing and bedding. It is advisable to use old towels and pillowcases during treatment and to wear a shower cap overnight if leaving the ointment on. Staining on fabrics may be difficult to remove.

How often should I use Sebco ointment?

The standard recommendation is to use Sebco Ointment once or twice a week, depending on the severity of your condition. Your GP or pharmacist may advise a different frequency based on your individual needs. Do not use it more often than directed, as this can increase the risk of skin irritation.

What are the alternatives to Sebco ointment for scalp psoriasis?

Alternatives include other coal tar-based shampoos such as Polytar or Neutrogena T/Gel, topical corticosteroid scalp applications, or vitamin D analogue preparations such as calcipotriol. You can explore our skin care collection for related products, and your GP or dermatologist can advise on prescription options if over-the-counter treatments are insufficient.

Can I use Sebco ointment on my face or body?

No — Sebco Ointment is formulated specifically for the scalp and should not be applied to the face, genitals, or mucous membranes. It should also not be used on acutely inflamed, broken, or infected skin anywhere on the body. If you need a treatment for psoriasis or dermatitis on other body areas, speak to your GP about suitable alternatives.

Does Sebco ointment interact with other medicines?

No clinically significant systemic drug interactions are known when Sebco Ointment is used topically as directed. However, you should avoid applying other topical preparations to the same scalp area at the same time without pharmacist guidance, as this could affect absorption or cause irritation. Always tell your pharmacist about all medicines you are currently using.

How long can I keep using Sebco ointment?

Sebco Ointment can be used as part of an ongoing scalp care routine, but if you find you need it continuously over a long period without improvement, it is worth reviewing your treatment with a GP or dermatologist. Persistent scalp conditions may benefit from a combination approach or a prescription-strength treatment. Our hair care collection includes complementary products that may support your scalp health between treatments.

What does the latest research say about coal tar for scalp psoriasis?

Coal tar has been used in dermatology for over a century and remains a recommended treatment option in NHS guidelines for scalp psoriasis. It is recognised for its ability to reduce skin cell proliferation and inflammation. While newer targeted therapies exist for moderate-to-severe psoriasis, coal tar preparations like Sebco remain a clinically valid first-line option for mild-to-moderate scalp disease.

How Should You Use Sebco Ointment?

Sebco Ointment is applied directly to the scalp — not the hair — and left on for a period of time before being shampooed off. Always read the label before use and follow the instructions provided by your pharmacist or GP. The ointment has a thick consistency, so warming the tube briefly in your hands before application makes it considerably easier to work with.

What Is the Correct Dose of Sebco Ointment?

There is no fixed measured dose for Sebco Ointment — the amount used will depend on the size of the affected area on your scalp. Apply enough to cover the affected areas without excessive build-up. The frequency of use is the key dosing consideration, as outlined in the table below.

When Is the Best Time to Use Sebco Ointment?

The most practical time to apply Sebco Ointment is in the evening, before bed. This allows you to leave the ointment on overnight — which is particularly beneficial for thick or stubborn scaling — and then shampoo it off in the morning. If you prefer a daytime application, allow at least one hour of contact time before washing off. Avoid applying immediately before going out in the sun, as coal tar can increase photosensitivity.

Wearing a shower cap overnight protects your bedding from staining and helps the ointment stay in contact with the scalp for longer, which may improve its effectiveness.

How Long Can You Use Sebco Ointment For?

Sebco Ointment can be used on an ongoing basis as part of a regular scalp care routine. Many people use it once or twice a week to keep their scalp condition under control. However, if you have been using it consistently for four weeks without any noticeable improvement, or if your condition worsens at any point, you should consult your GP or pharmacist. They may recommend a different treatment or refer you to a dermatologist for further assessment.

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

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Anonymous

Works as prescribed by my Dermatologist for my scalp psoriasis

What Are the Most Common Side Effects of Sebco Ointment?

Most people tolerate Sebco Ointment well when used as directed, but some individuals may experience mild local reactions. These are usually temporary and resolve once the product is washed off or use is reduced.

  • Mild skin irritation or redness at the application site
  • Temporary staining of hair — particularly noticeable in lighter or bleached hair
  • Staining of clothing, towels, or bedding from the coal tar
  • A strong, distinctive smell from the coal tar component

What Are the Less Common Side Effects of Sebco Ointment?

Less frequently, some people may experience more noticeable reactions, particularly if the ointment is used more often than recommended or left on for extended periods without adequate rinsing.

  • Folliculitis — inflammation or infection of the hair follicles, which may present as small red bumps or pustules on the scalp
  • Increased photosensitivity — the treated scalp area may burn more easily in sunlight; avoid prolonged sun exposure after application
  • Dryness or peeling of the scalp beyond the intended therapeutic effect

What Are the Serious Side Effects of Sebco Ointment?

Serious side effects are rare but can occur. Allergic contact dermatitis is possible if you are sensitive to any of the ingredients, including coal tar, salicylic acid, sulphur, or coconut oil. Signs of an allergic reaction include:

  • Sudden worsening of redness, swelling, or blistering on the scalp
  • Itching or burning that is significantly worse than before treatment
  • Rash spreading beyond the treated area
  • Swelling of the face, lips, or throat
  • Difficulty breathing — this requires immediate emergency medical attention

If you suspect a serious allergic reaction, stop using the product immediately and call 999 or go to your nearest A&E department.

What Should You Do If You Experience Side Effects?

For mild irritation or staining, simply reduce the frequency of use or shorten the contact time before shampooing off. If irritation persists or worsens, stop using the product and speak to your pharmacist. They can advise whether to continue, switch to an alternative, or refer you to your GP. Do not try to manage a worsening skin reaction at home without professional guidance.

It is also worth noting that coal tar preparations can occasionally cause acneiform eruptions on the scalp or hairline. If you notice new spots or pustules developing, mention this to your pharmacist or GP at your next appointment.

Can Sebco Ointment Interact With Other Medicines?

No clinically significant systemic drug interactions are known when Sebco Ointment is used topically as directed. Because absorption through the scalp is minimal, the risk of interactions with oral medicines is very low. However, you should avoid applying other topical scalp preparations to the same area at the same time without first checking with your pharmacist, as combining products could increase irritation or alter the effectiveness of either treatment.

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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