Antioxidant

Allantoin Ascorbate

INCI: ALLANTOIN ASCORBATE
CAS 57448-83-6 EC 260-739-1
(2,5-Dioxoimidazolidin-4-yl)urea L-ascorbate
Limited Data
Insufficient safety data available. Consider enriching this ingredient.
Details

Description

(2,5-Dioxoimidazolidin-4-yl)urea L-ascorbate

Purpose

Function

Antioxidant, Skin Conditioning, Skin Protecting, Soothing
Profile

Properties

Silicone
Silicone free
Compliance

Regulatory Status

EU
Permitted
Safety
EXCELLENT
US
Permitted
Absorptionlow
Sensitizationnone
MoSnot established
NOAEL450 mg/kg
ConcernLow
Verdict

Minimal risk. Reported use concentration up to 0.05%. White-yellowish powder, water soluble. Stable within recommended storage. FDA approves allantoin as skin protectant at 0.5–2.0%.

US Note

CIR-reviewed: Safe as used — covered in CIR Final Report (Int. J. Toxicol. 29(Suppl 2):84S–97S, 2010); ascorbic acid independently assessed safe by CIR

Assessment

Ratings

Comedogenic0/5
LowHigh
Irritancy0/5
LowHigh
Reference

Identifiers

CAS Number
57448-83-6
EC Number
260-739-1
INCI
ALLANTOIN ASCORBATE
Category
Antioxidant
Updated
Apr 23, 2026