What does Allantoin acetyl methionine do?

Used in cosmetics as a skin-conditioning agent, a skin protectant and a soothing agent.

Is Allantoin acetyl methionine safe?

We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

beauty
industrial

Allantoin acetyl methionine

CAS 4207-40-3

Concern score

Not assessed — no hazard data yet.

Allantoin acetyl methionine in plain language

What it is: Also known as Allantoin n-acetyl-dl-methionine · Allantoin, compd. with dl-n-acetylmethionine (1:1) · Methionine, n-acetyl-, compd. with allantoin · Methionine, n-acetyl-, compd. with allantoin (1:1), dl- · N-Acetylmethionine--N-(2,5-dioxoimidazolidin-4-yl)urea (1/1) · AKOS030575594
Show all 10 names
Almeth · Q27275200 · T29869 · UNII-C554034748
What it does: Used in cosmetics as a skin-conditioning agent, a skin protectant and a soothing agent.
Skin conditioning
Skin protecting
Soothing
Antistatic
Humectant
Conditioner
Is it a concern?: We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. Allantoin acetyl methionine appears in these published regulatory listings.

Recorded in these product areas

Found in consumer products
Industrial

EUCosIngActiveN-acetyl-DL-methionine, compound with (2,5-dioxo-4-imidazolidine)urea (1:1)
- N-acetyl-DL-methionine, compound with (2,5-dioxo-4-imidazolidine)urea (1:1)Source →
USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Humectant, Anti-static agent, Softener and conditioner.
- EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Humectant, Anti-static agent, Softener and conditioner.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
- openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Allantoin acetyl methionine. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

SCCS
EU Scientific Committee on Consumer Safety
No SCCS opinion on file.
CIR
Cosmetic Ingredient Review (US expert panel)
No CIR safety assessment on file.

Evidence & sources

No graded research studies for Allantoin acetyl methionine yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

6 data sources

Where this comes from

CosIng
regulatory · updated 2026-09-23
Open →
EPA Chemical and Products Database
exposure · updated 2019-12-20
Open →
EPA DSSTox Identifiers
chemistry · updated 2025-12-29
Open →
FDA GSRS UNII
registry · updated 2026-02-26
Open →
openFDA Substance
registry · updated 2026-05-24
Open →
PubChem Live Enrichment
chemistry · updated 2026-05-17
Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.

Where it has been recorded

How often EPA CPDat has listed Allantoin acetyl methionine in a product composition. These are source records, not Greenveil catalog products.

Named organisations

Typical roles

Skin conditioningSkin protectingSoothingAntistaticHumectantConditioner

See products using Allantoin acetyl methionine →