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The ingredient, explained

Magnesium Sulfate

A published expert safety assessment covers the exact ingredient in the specified exposure context.

BulkingViscosity controlling
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Ingredient guide

What it is and what it does

Magnesium sulphate

About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗

Bulking
Changes a product's bulk density.
Viscosity controlling
Adjusts how thick or fluid a product is.

Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗

Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.

A closer look

What the research shows

Safety assessment

Panel judged magnesium sulfate safe in the cosmetic uses and concentrations assessed.

What this does not tell us

Animal, in vitro and clinical experience inform safety; no claim that cosmetic use reproduces injected medical magnesium effects or clinical edema benefits.

Sources for this summary. PubMed 29761729 ↗

Research review checked Oct 1, 2026

Bounded review of local candidates, exact-name indexed primary journal/PubMed safety and topical searches; not a systematic review.

Ingredient research is not proof that a product containing this ingredient works.

Read the 1 selected study

Follow the formula

Products containing this ingredient

All 160 products ↗

From the Serenfold edit. Linked by the ingredient list, without an efficacy ranking.

Names and identifiers

Registry identity

Magnesium sulphate

INCI name on ingredient lists
MAGNESIUM SULFATE
CAS registry number
7487-88-9, 10034-99-8 -heptahydrate-, 18939-43-0
EC number
231-298-2
Other recorded names (1)
  • magnesii sulfas

Sources for this ingredient record