Ferrous Fumarate

AKA: Iron(II) fumarate, 141-01-5, Feostat, Ercoferro, Ferrofume, Hemoton, Palafer, Toleron, Tolferain

Synthetic

Skin Conditioner

Not Clean

2-Butenedioic acid (E)-, iron(2+) salt (1:1); Iron(II) fumarate

Formula

C4H2FeO4

Mol. Weight

169.90

CAS #

141-01-5

Form

Powder

Functions

Skin Conditioning

A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.

Locks in moisture

Traditional Use

Developed in the early 20th century as a bioavailable iron supplement for treating anemia. Its use in cosmetics is modern and functional, designed to address iron deficiency rather than for traditional skincare benefits.

EWG

CIR

Safe as used

Pregnancy

Yes

CIR Safety Findings

Non-Comedogenic

medical-approval

all-shades-safe

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

The paper trail

🔬Peer-reviewed1 paper →

⚖️Regulatory1 listing →

🛡️Safety-assessed1 review →

Counts, not a verdict. A listing isn't a study. The trail, you decide.

Verified Jun 2026

Data: PubChem · CosIng · EWG · CIR