SIMETHICONE
Silica, hydrated, compounds with poly(dimethylsiloxane)
SIMETHICONE is listed in the EU CosIng inventory, but no direct annex records are linked on this page yet.
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.
Chemical identity and properties
Simethicone
Simethicone is a silicon based surfactant that decreases the surface tension of gastrointestinal gas bubbles to facilitate their elimination. It has a favourable safety profile as it is not systemically absorbed. Simethicone has been in use since the 1940s but was granted FDA approval in 1952. — DrugBank
- IUPAC name
- dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane
- Molecular formula
- C6H18O4Si3
- Molecular weight
- 238.46 g/mol
- Exact mass
- 238.05128865 Da
- Topological polar surface area
- 52.6 Ų
- Hydrogen-bond donors
- 0
- Hydrogen-bond acceptors
- 4
- Covalent units
- 2
- Defined stereocentres
- 0
Also known as
8 more reported names
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
Inventory details for SIMETHICONE
INCI name
SIMETHICONE
INN name
simethicone
Description
Silica, hydrated, compounds with poly(dimethylsiloxane)
Record provenance
- Inventory reference
- 78955
- Imported identity
- SIMETHICONE
- Source update
- 15/10/2010
Annex records for SIMETHICONE
Key data
- ANTIFOAMING
- Suppressing foam during manufacturing or reducing the tendency of finished products to generate foam.
- HAIR CONDITIONING
- Enhancing the appearance and feel of hair. Leaving the hair easy to comb, supple, soft and shiny and/or imparting volume, lightness, gloss, texture, etc.
- SKIN CONDITIONING
- Maintaining the skin in good condition.
- SKIN CONDITIONING - EMOLLIENT
- Acting as lubricants on the skin surface providing the skin with a soft and smooth appearance.
Official EU ingredient-name evidence
The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.
Related inventory evidence
Ingredients with overlapping formulation functions
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
How SIMETHICONE appears in the CosIng inventory
The CosIng inventory lists SIMETHICONE 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.
SIMETHICONE 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
Source note for SIMETHICONE
This page reproduces the CosIng inventory entry for SIMETHICONE 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 SIMETHICONE and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.
Tools & next steps
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