Do you notice flakes on your scalp: persistent dandruff, itching, red patches? Many people confuse dandruff et scalp psoriasisHowever, these are not the same conditions, and their treatment is completely different. In this article, we will see how to easily distinguish them, what the key symptoms are, and above all what solutions to adopt to regain a healthy scalp.

Dandruff: dry or oily?

Dandruff appears when the scalp renews its skin too quickly. Dandruff is not all the same: there is dry dandruff and oily dandruff, which have very different origins and appearances.

Dry dandruff

They appear as small, fine, white, dust-like particles that easily fall onto the shoulders. The scalp is dry, sensitive, and sometimes slightly irritated, but without significant redness.
They are often linked to dehydration, the use of overly aggressive hair products, stress or even the winter cold.

Oily dandruff

They are thicker, yellowish, and stick to the scalp. They are almost always associated with significant itching and redness. Their main cause is seborrheic dermatitis, a condition linked to the proliferation of a fungus naturally present on our skin: malassezia.
When the scalp produces too much sebum, this fungus feeds on these lipids and produces irritating substances. The result: inflammation, oily scales, and persistent itching.

Scalp psoriasis: very different patches

Psoriasis is a autoimmune inflammatory diseaseHere, it is not sebum or a fungus that is the cause, but an excessive reaction of the immune system.
Concretely, the skin produces cells much too quickly (up to 7 times more than normal), which leads to the formation of thick, dry red patches, well-defined, often covered with silvery scales.

These plaques frequently appear on the edges of the scalp (temples, nape of the neck, behind the ears) and cause itching that is sometimes intense, even leading to bloody scratching. Unlike dandruff, psoriasis is a chronic disease: it cannot be cured, but can be controlled and stabilized over the long term.

Comparison table: dandruff or psoriasis?

How to differentiate?

• dandruff are generally diffuse, in the form of small scales, dry or oily. They disappear with appropriate care.
  
  

• Le Psoriasis, on the contrary, forms thick, well-defined, chronic and recurring plaques.
  
  

⚠ Even dermatologists can sometimes hesitate at first glance. That's why a personalized dermo-capillary diagnosis is essential to adapt the care.

What natural solutions should we adopt?

In case of dandruff

• Use a purifying pre-shampoo which helps to remove scales (eg: Anti-Dandruff Pre-Shampoo Mask).
  
  

• Wash with a pH5 mild antifungal shampoo, which targets Malassezia without attacking the scalp.
  

Soothe with a moisturizing serum with aloe vera or hyaluronic acid.

In case of psoriasis

• Apply a gentle keratolytic treatment (as the Anti-PSO & Plaque Concentrate) to help remove plaque without irritation.
  

• Use a pH5 gentle shampoo without sulfates, respectful of the microbiome (eg: Universal Shampoo pH5).
  
  

• Soothe with a moisturizing serum enriched with prebiotics to calm inflammation.
  

Supporting internal balance with anti-inflammatory supplements (omega-3, vitamin D, turmeric, zinc).

Link to our guide to soothing scalp psoriasis 

Preventing recurrences: microbiome, diet and lifestyle

Whether it's dandruff or psoriasis, the key is to work on the background factors :

• Preserving the microbiome : choose shampoos with pH5, enriched with prebiotics.
  
  

• Anti-inflammatory diet : favor omega-3, colorful vegetables, turmeric; limit sugar, alcohol and ultra-processed products.
  
  

• Stress management : yoga, cardiac coherence, meditation. Stress is a major trigger.
  
  

Restorative sleep : essential for skin and immune balance.

FAQ

Can psoriasis go away permanently?
No, it's a chronic illness. But a suitable routine can significantly reduce flare-ups.

Is dandruff contagious?
No. Neither dandruff nor psoriasis are contagious.

Does scratching your plaques make them worse?
Yes, scratching increases inflammation and can even cause local scarring.

Why isn't my classic anti-dandruff shampoo working?
Many shampoos contain irritating sulfates. They mask symptoms without addressing the underlying causes, such as the microbiome.

Conclusion

Knowing the difference between dandruff and psoriasis is essential for adopting the right routine. Dandruff, whether dry or oily, is easily controlled with gentle, targeted care. Psoriasis, on the other hand, requires a comprehensive approach that combines topical care, supplements, and a healthy lifestyle. In all cases, a microbiome-friendly routine helps restore a soothed scalp and limit recurrences.

👉 Don't know where to start? Make your free dermo-capillary diagnosis here and discover the routine best suited to your scalp.