What is Magnesium Myristate?
Magnesium Myristate falls into the mineral category — a mineral-based ingredient. A metallic soap of myristic acid used as a binder and slip agent in pressed powders, blushes and eyeshadows. It is named on the CLEARSTEM and AcneClinicNYC pore-clogging ingredient lists, but neither publishes a 0-5 comedogenic score for it and no Fulton-derived table we cite carries one. We therefore leave it unrated rather than invent a number — treat the listing itself as the signal.
Where Magnesium Myristate shows up
As a mineral-based ingredient, Magnesium Myristate typically appears in sunscreens, mineral makeup, and masks.
Is Magnesium Myristate bad for acne-prone skin?
Because no reliable comedogenic score exists for Magnesium Myristate, judge it by how your own skin responds rather than by a number.
Worth flagging: Magnesium Myristate's rating is disputed. Credible sources land on different numbers, which is why we show a range rather than a single score — and why your own experience is the best tiebreaker.
Note for fungal-acne (malassezia) sufferers: Magnesium Myristate is commonly avoided in fungal-acne routines, since it falls into the fatty-acid or ester families the yeast can feed on. The evidence there is looser than for comedogenicity — see our fungal-acne checker for context.