We’re here to help.
Our friendly team is available to help Monday to Friday 9:00am – 5:00pm.
If you need urgent assistance, do not use this service. Call 111, or in an emergency call 999.
Our friendly team is available to help Monday to Friday 9:00am – 5:00pm.
If you need urgent assistance, do not use this service. Call 111, or in an emergency call 999.
Fast, discreet delivery
Free delivery over £40
100% UK-based pharmacy
All doctors & pharmacists UK-based
Free advice & support
Clinical support free · Mon–Fri 9am–5pm
Why Patients Choose Access Doctor
10+
Years serving UK patients
—
Verified patient reviews
1,000+
Licensed treatments
24/7
Consultation available
A coal tar, salicylic acid and sulphur scalp ointment used to soften and remove thick scale in psoriasis, seborrhoeic dermatitis and dandruff.
Cocois helps remove scalp scale but does not treat underlying inflammation. If your scalp remains red, inflamed or itchy, a clinician may recommend an additional steroid or vitamin D treatment. Read our full Cocois guide for details.
Order before 3pm — same-day dispatch (MON - FRI)
~5 min consultation
Secure & confidential · Reviewed by a UK prescriber
Suitable age
18 years +
Max per order
1 pack
Consultation
Online consultation
Cocois Ointment is a medicated scalp treatment for thick, scaly skin conditions, including scalp psoriasis, seborrhoeic dermatitis, eczema and severe dandruff. It contains coal tar solution 12%, salicylic acid 2% and sulphur 4% in an ointment base.
These ingredients work by softening and loosening adherent scale, making it easier to remove. It is a descaling treatment, not an anti-inflammatory, so it may not control the redness and itch of psoriasis on its own.
Access Doctor offers a consultation-led online service. Complete the online consultation so a UK prescriber can assess whether this treatment is suitable for you. Supply is subject to clinical assessment. Read our full Cocois ointment guide for a deeper explanation of how it works.
| Product | Cocois Ointment |
| Pack size | 100g tube |
| Active ingredients | Coal tar solution 12% w/w, salicylic acid 2% w/w, precipitated sulphur 4% |
| Legal classification | Confirm against current UK product information and pharmacy records |
| Intended use | Scaly scalp conditions, including psoriasis, seborrhoeic dermatitis and dandruff |
| Important warnings | Staining, fire risk from contaminated fabrics, skin irritation, photosensitivity |
How to apply: Part your hair and apply a thin ribbon of Cocois directly to the affected scalp. Avoid contact with your eyes, mouth and other mucous membranes.
How long to leave it on: Leave it on for approximately one hour, then shampoo it out thoroughly. Wash your hands after application.
How often: For severe scaling, use daily for 3–7 days until improvement. For mild dandruff, use intermittently (e.g., once a week).
Important warnings:
Staining: Cocois can stain clothing, bedding and jewellery. Protect fabrics and remove jewellery before use.
Fire risk: Fabrics contaminated with the ointment are highly flammable. Keep away from naked flames and wash fabrics regularly.
Irritation: Stop using if you develop a rash or irritation. Coal tar can increase sensitivity to sunlight.
For detailed instructions, including overnight use and application tips, read our full guide.
It is a scalp ointment used for scaly conditions like psoriasis, seborrhoeic dermatitis and severe dandruff. It softens and loosens thick scale.
Many people see improvement within 3–7 days of daily use for severe scaling. If there is no improvement after the first week, speak to a doctor.
Access Doctor uses an online consultation pathway. Complete the consultation so a UK prescriber can assess whether it is suitable for you.
No. Cocois contains coal tar, salicylic acid and sulphur. It helps remove scale, but another treatment may be needed to control inflammation.
It can. Hair discolouration may occur with coal-tar preparations. Shampooing thoroughly helps, but some discolouration may persist.
Some specialist guidance discusses longer application times for thick scale, but the product leaflet should remain the default. Ask your prescriber before leaving it on longer than one hour. Read our full guide for more details.
They contain the same three active ingredients at the same strengths. Ask a pharmacist or prescriber whether Sebco is a suitable alternative if Cocois is out of stock.
Apply once weekly as required, alternatively apply daily for the first 3–7 days (if severe), shampoo off after 1 hour.
Helpful articles and clinical guides related to this treatment category.
Free consultation
Online review by a UK prescriber
Next-day delivery
Order before 3pm where offered
Discreet packaging
Plain outer packaging
