skincarecheck
INCI ingredient

Magnesium Oxide

Magnesium Oxide appears on 17 ingredient lists in our database, most often in shower gels.

What it triggers

  • Vegan originYesno animal source
  • FragranceNonot a perfume ingredient
  • ParabenNonot a preservative of this family
  • SulfateNonot a sulfate surfactant
  • SiliconeNonot a silicone
  • AlcoholNonot a drying alcohol

What it does

Magnesium Oxide appears on 17 ingredient lists in our database, most often in shower gels.

It does not belong to any of the six groups we check, so it never changes a verdict.

We have not written the plain-language note for this ingredient yet; the facts above come straight from how it is classified.

Functions: absorbent, buffering, opacifying

In the EU ingredient database

Functions listed by CosIng
  • absorbent
  • buffering
  • opacifying
  • absorbent: Taking up water- and/or oil-soluble (dissolved or finely dispersed) substances.
  • buffering: Stabilising the pH of an aqueous medium in a narrow range even if an acid or base is added. Altering and/or maintaining a cosmetic product's pH at the desired level.
  • opacifying: Reducing transparency or translucency of cosmetics.

CAS 1309-48-4 · EC 215-171-9

EU regulation

Not on a restricted-substances annex. Listed as an allowed cosmetic ingredient.

Source: CosIng, European Commission. Informative, no legal value; the regulation text is the reference.

Classification from the INCI name; product lists from Open Beauty Facts.Report a mistake