There are two types: dry dandruff and oily dandruff.

The way they look provides information about the root cause of the issue.

  • In moderate dandruff cases, scales are thin, dry, grey or whitish and do not stick to the scalp; they fall onto the shoulders.
  • Thick, greasy and yellowish dandruff sticks to the scalp and is usually accompanied by itching. It is a minor form of seborrhoeic dermatitis. The scalp is often pink and irritated.
  • Dry, whitish patches accompanied by underlying redness are psoriasis characteristics. In this case, itchiness also usually occurs.

If you have concerns about severe dandruff, contact your dermatologist.

Doctor with patient - Talking

What causes severe, chronic scaly patches or psoriasis?

Psoriasis is characterised by severe scales with dry areas that appear as thick, clearly-defined patches - particularly on the edge of the scalp - and are round or oval-shaped, with redness and scales. These scales vary in size and can resemble a helmet covering the whole scalp.

They are silvery white, compact, dry and particularly sticky. They are generally accompanied by intense itching.


Genetic predisposition, stress, certain infections (eyes, nose and throat and dental in particular), and the use of certain medicines (lithium, synthetic anti-malarials, beta-blockers, etc.) can play a role in the appearance of severe scales with dry areas.


They result from the combination of 3 phenomena:

  • BIODERMA product photo, Node DS+ 125ml, shampoo for sensitive scalp
  • Rinse-off daily cleanser

    Dandruff and scales scalp

    DSactiv™ patent

    Nodé DS+ Shampooing

    The shampoo that acts on the causes of persistant dandruff.

    For whom ?

    Adults, Teens