Allantoin Acetyl Methionine
INCI: ALLANTOIN ACETYL METHIONINE
CAS 4207-40-3 EC 224-126-2
N-acetyl-DL-methionine, compound with (2,5-dioxo-4-imidazolidine)urea (1:1)
Limited Data
Insufficient safety data available. Consider enriching this ingredient.
Details
Description
N-acetyl-DL-methionine, compound with (2,5-dioxo-4-imidazolidine)urea (1:1)
Purpose
Function
Antistatic, Skin Conditioning, Skin Protecting, Soothing
Profile
Properties
Silicone
Silicone free
Compliance
Regulatory Status
EU
Permitted
Safety
GOOD
US
Permitted
Absorptionlow
Sensitizationnone
MoSnot established
ConcernModerate
Verdict
Data gap: not included in CIR final report. Safety is inferred from parent compounds (allantoin + N-acetyl-DL-methionine). Both parent compounds have strong safety profiles, but the complex itself lacks independent toxicological data.
US Note
Not restricted; not specifically covered by the CIR allantoin complex review (that review covered ascorbate, biotin, galacturonic acid, glycyrrhetinic acid, panthenol, polygalacturonic acid — not acetyl methionine)
Assessment
Ratings
Reference