Dimethiconol is generally a lower-concern ingredient for seborrheic dermatitis. It is a silicone conditioning material used to improve softness and reduce a rough or dry feel, and the reviewed cosmetic-use assessment does not provide a specific reason to avoid it.

No reliable evidence found for this page shows that Dimethiconol feeds Malassezia or treats seb derm. It can still be part of a product that feels too heavy, fragranced or irritating for you, so the complete formula matters. Stop if use repeatedly increases itching, redness or discomfort.