Ferrous Fumarate
AKA “Iron(II) fumarate, 141-01-5, Feostat, Ercoferro, Ferrofume, Hemoton, Palafer, Toleron, Tolferain”
Skin Conditioning
Ingredient Facts
Ferrous fumarate
AKA: Iron(II) fumarate, 141-01-5, Feostat, Ercoferro, Ferrofume, Hemoton, Palafer, Toleron, Tolferain
Skin Conditioning · Skin Conditioning · EWG: 4
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
See origin →
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.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR