Glyceryl Stearate Citrate is not automatically unsafe for seborrheic dermatitis, but it is worth extra caution in a strict Malassezia-screening routine. It is an emulsifier that keeps oil and water mixed, and practical screening rules often flag fatty-acid esters as a class.

Laboratory work shows that Malassezia can use some long-chain fatty acids and hydrolyse certain synthetic monoesters, but Glyceryl Stearate Citrate itself was not tested. This makes the concern theoretical, not proof that a finished cream will worsen a flare. If you are simplifying a difficult flare, an alternative may be easier to assess; otherwise judge the complete product by tolerance.