An itchy, flaky scalp isn't always dandruff. Seborrhoeic dermatitis and scalp psoriasis can cause similar symptoms, but they need different treatments.
Nizoral Dandruff Shampoo contains ketoconazole, an antifungal used for dandruff and seborrhoeic dermatitis of the scalp. It is not licensed to treat scalp psoriasis in Ireland.
What Is Nizoral Shampoo and How Does It Work?
Nizoral Dandruff Shampoo contains ketoconazole 2% (20 mg/g), an antifungal ingredient that helps control Malassezia yeast. This yeast naturally lives on the skin but can contribute to dandruff and seborrhoeic dermatitis. By controlling its growth, ketoconazole may help reduce associated flaking and itching.
Nizoral is intended for specific scalp conditions, not every cause of flaking or irritation. If you're unsure whether you have dandruff or a dry scalp, read our guide to dandruff and dry scalp before choosing a product.
Dandruff vs Seborrhoeic Dermatitis vs Scalp Psoriasis
Dandruff, seborrhoeic dermatitis and scalp psoriasis can all cause itching and flaking, but their underlying causes and typical symptoms differ. Recognising these differences can help you understand which treatment may be appropriate.
Dandruff
Dandruff typically causes loose white or yellowish flakes on the scalp and hair. Itching may occur, but pronounced redness and thick, well-defined plaques are less typical.
Seborrhoeic Dermatitis
Seborrhoeic dermatitis is an inflammatory skin condition that commonly affects areas rich in oil glands, including the scalp, eyebrows and sides of the nose.
It can cause redness, itching and white or yellowish scales that may look greasy. Symptoms can be more persistent than ordinary dandruff and may affect several areas of the face and scalp.
Scalp Psoriasis
Scalp psoriasis is a chronic inflammatory skin condition that can cause raised, clearly defined patches covered with thick, silvery-white scales.
Patches may extend beyond the hairline or appear behind the ears. Scratching or forcibly removing scales can irritate the skin and cause bleeding.
How Can You Tell the Difference?
|
Feature |
Dandruff |
Seborrhoeic dermatitis |
Scalp psoriasis |
|
Typical flakes |
Loose, white or yellowish |
White or yellowish, sometimes greasy |
Often thick and silvery-white |
|
Redness |
Usually mild or absent |
Common |
May be prominent beneath plaques |
|
Skin patches |
Usually no thick plaques |
Red, sometimes poorly defined patches |
Raised, clearly defined plaques |
|
Commonly affected areas |
Scalp |
Scalp, eyebrows and sides of the nose |
Scalp, hairline and sometimes behind the ears |
These symptoms can overlap, and some people may have more than one condition. The table is a guide, not a diagnosis.
Does Nizoral Shampoo Treat Scalp Psoriasis?
No. Nizoral Dandruff Shampoo is not licensed to treat scalp psoriasis in Ireland. Its approved uses include dandruff and seborrhoeic dermatitis associated with Malassezia yeast.
Scalp psoriasis is an inflammatory skin condition, not a fungal infection, so it requires a different treatment approach. Nizoral may help manage coexisting dandruff, but it does not treat the underlying psoriasis.
If you have thick, persistent plaques, scales extending beyond your hairline or symptoms that do not improve with appropriate dandruff treatment, speak to a pharmacist or GP. Seek advice promptly if your scalp becomes increasingly painful, inflamed or starts bleeding repeatedly.
How to Use Nizoral Shampoo and How Often
Use Nizoral according to the directions for your specific product. Applying it more frequently than recommended does not necessarily improve results.
How to Apply Nizoral Shampoo
For Nizoral Dandruff Shampoo 2%, follow these application steps:
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Wet your hair and scalp. Thoroughly wet the affected area.
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Apply the shampoo. Massage it into a lather, concentrating on the scalp rather than just the hair.
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Leave it on for 3–5 minutes. Follow the recommended contact time before rinsing.
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Rinse thoroughly. Wash the shampoo out completely and avoid contact with your eyes.
How Often Should You Use Nizoral?
For dandruff, the Irish product instructions recommend using Nizoral every 3–4 days for 2–4 weeks. Once symptoms are controlled, use it once every 1–2 weeks if needed to help prevent dandruff from returning.
You can use your regular shampoo between treatments if you need to wash your hair more frequently. Do not increase the frequency or extend the treatment course without professional advice.
If your symptoms have not improved after four weeks, consult a pharmacist or GP to check whether another treatment is needed.
Nizoral is for external use only. Avoid contact with your eyes and check the package leaflet for precautions and warnings. Stop using it and seek advice if you experience significant irritation or a suspected allergic reaction.
What Helps Scalp Psoriasis If Nizoral Is Not Suitable?
Scalp psoriasis needs treatment that targets inflammation and scaling rather than fungal growth. A GP or dermatologist can recommend a suitable treatment based on the severity of your symptoms and how much of your scalp is affected.
Treatments for Scalp Psoriasis
Treatment options may include:
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Corticosteroid scalp preparations: Help reduce inflammation, redness and itching.
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Vitamin D-based treatments: Help control psoriasis-related skin changes.
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Combination treatments: Combine active ingredients to address psoriasis symptoms and may be recommended when appropriate.
The right treatment depends on your condition and medical history. Follow professional advice on how to apply medicated scalp treatments and how long to use them.
Gentle Scalp Care
Gentle hair care can help minimise irritation while you manage psoriasis.
Avoid scratching or forcibly removing scales. Choose a mild shampoo for routine washing, use lukewarm water if hot water aggravates your scalp, and avoid hair products that cause stinging or irritation.
These measures can support scalp comfort but will not treat the underlying psoriasis.
For everyday washing and styling, browse our hair care collection for products suited to your routine. If you have persistent scaling, painful patches or worsening symptoms, consult a pharmacist or GP rather than relying on hair-care products alone.
Conclusion
Nizoral shampoo can help manage dandruff and certain yeast-associated scalp conditions, but it is not licensed to treat scalp psoriasis in Ireland. If your flaking or itching persists, a pharmacist or GP can help you identify the likely cause and choose an appropriate treatment.