What function does MAGNESIUM 3-HYDROXYBUTYRATE serve in cosmetics?

According to the EU CosIng inventory, MAGNESIUM 3-HYDROXYBUTYRATE carries the following function designation(s): HUMECTANT, PLASTICISER, SKIN CONDITIONING - HUMECTANT, SKIN CONDITIONING - MISCELLANEOUS.

What other records share CAS 586976-57-0?

CAS 586976-57-0 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

How do I check if my formula contains MAGNESIUM 3-HYDROXYBUTYRATE?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef cosing-live-1046312024-08-14

MAGNESIUM 3-HYDROXYBUTYRATE

Magnesium 3-Hydroxybutyrate is the (2:1) Magnesium salt of 3-Hydroxybutyric Acid.

MAGNESIUM 3-HYDROXYBUTYRATE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.

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Regulatory evidence by market

No rule for this ingredient has been imported for any of the 13 markets tracked here.

That describes this inventory, not the law. No imported rule is not evidence that an ingredient is permitted: a rule may exist under another name or identifier, or in a dataset not yet imported here.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 586976-57-0

CAS 586976-57-0PubChem CID 10130812

Magnesium 3-hydroxybutyrate

IUPAC name: magnesium bis(3-hydroxybutanoate)

Molecular formula: C8H14MgO6
Molecular weight: 230.50 g/mol
Exact mass: 230.0640799 Da
Topological polar surface area: 121.0 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 6
Covalent units: 3
Defined stereocentres: 0

Also known as

72U3344SHQRefChem:1088703magnesium;3-hydroxybutanoate3-Hydroxybutanoic acid magnesium saltMagnesium (R)-3-hydroxybutanoate3-Hydroxybutyric Acid Magnesium Saltmagnesium(2+) bis(3-hydroxybutanoate)Butanoic acid, 3-hydroxy-, magnesium salt (2:1), (3R)-

6 more reported names

Magnesium 3-hydroxybutanoateMagnesium3-hydroxybutanoateC8H14MgO63-Hydroxybutanoic acid xmagnesium saltButanoic acid, 3-hydroxy-, magnesium saltButanoic acid, 3-hydroxy-, magnesium salt (2:1)

Open full PubChem record PubChem annotations 3D structure image

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Official European Commission record

CosIng substance ID: 104631
Published in the Official Journal: Yes
Recorded by the Commission: 2024-08-14

Open this entry in the official CosIng database

Fields as published by the European Commission. The link opens the entry itself, not a search for it.

Inventory details for MAGNESIUM 3-HYDROXYBUTYRATE

INCI name

MAGNESIUM 3-HYDROXYBUTYRATE

Description

Magnesium 3-Hydroxybutyrate is the (2:1) Magnesium salt of 3-Hydroxybutyric Acid.

Record provenance

Inventory reference: cosing-live-104631
Imported identity: MAGNESIUM 3-HYDROXYBUTYRATE
Source update: 2024-08-14

European Commission CosIng source notes

Annex records for MAGNESIUM 3-HYDROXYBUTYRATE

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Key data

CAS

586976-57-0

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Restriction

—

Function

HUMECTANT: Retaining and/or preserving the moisture in a product during use.
PLASTICISER: Softening and making supple synthetic polymers that otherwise could not be easily deformed, spread or worked out.
SKIN CONDITIONING - HUMECTANT: Increasing the water content of the top layers of the skin. Humectants are primarily hygroscopic agents drawing moisture from the surrounding air.
SKIN CONDITIONING - MISCELLANEOUS: Enhancing the appearance of dry and/or damaged skin by reducing flaking and restoring suppleness.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#15754 · MAGNESIUM 3-HYDROXYBUTYRATE

Ingredients with overlapping formulation functions

ISOPROPYL CITRATEPLASTICISER, SOLVENT

ISOPROPYLPHTHALIMIDEPLASTICISER, SKIN CONDITIONING, SOLVENT

ISOSORBIDE DICAPRYLATE/CAPRATEPLASTICISER

ISOSORBIDE DISUNFLOWERSEEDATEHUMECTANT, PLASTICISER, SKIN CONDITIONING

METHYL EPOXIDIZED SOYATEFILM FORMING, PLASTICISER

METHYL POLYRICINOLEATEBINDING, PLASTICISER

METHYLBUTENE/PIPERYLENE COPOLYMERPLASTICISER

N-ETHYLTOSYLAMIDE/EPOXY RESINFILM FORMING, PLASTICISER

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How MAGNESIUM 3-HYDROXYBUTYRATE appears in the CosIng inventory

The CosIng inventory lists MAGNESIUM 3-HYDROXYBUTYRATE as a cosmetic ingredient and this page links it to 0 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

MAGNESIUM 3-HYDROXYBUTYRATE is also tagged with 4 cosmetic functions in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

MAGNESIUM 3-HYDROXYBUTYRATE is listed in the EU CosIng ingredient inventory with no direct annex restriction records linked at this time. Absence of an annex link does not guarantee unrestricted use — always verify against the current official CosIng database before formulating.

According to the EU CosIng inventory, MAGNESIUM 3-HYDROXYBUTYRATE carries the following function designation(s):

CAS 586976-57-0 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.

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Source note for MAGNESIUM 3-HYDROXYBUTYRATE

This page reproduces the CosIng inventory entry for MAGNESIUM 3-HYDROXYBUTYRATE from public European Commission cosmetic ingredient materials and shows linked identifiers even when no direct annex match is currently attached.

Use this inventory page to research MAGNESIUM 3-HYDROXYBUTYRATE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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