undefined 1
Steareth-10
AKA “30-Decaoxaoctatetracontan-1-ol”
Surfactant
Ingredient Facts
Steareth-10
AKA: 30-Decaoxaoctatetracontan-1-ol
Surfactant · Cleansing · EWG: 2
Plant-Derived
Cleanser
Emulsifier
Plant Oil
Clean
Poly(Oxy-1,2-Ethanediyl), .alpha.-Octadecyl-.omega.-Hydroxy
Effective at 11.51%
CAS #
9005-00-9, 13149-86-5
See origin →
Functions
Refatting
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Surfactant Cleansing
Surfactant Emulsifying
Traditional Use
Developed as a nonionic surfactant and emulsifier derived from stearyl alcohol and polyethylene glycol in the mid-20th century for use in creams, lotions, and cleansing products.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
medical-approval
all-shades-safe
Phototoxicity Concern
Concentration Guide
0.02%
23.0%
0%32%
Effective Range
CIR reported use: 18-23 | 0.02-0.4 | 0.2-1
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Allergic contact dermatitis caused by wet wipes containing steareth-10: Is stearyl alcohol to blame?
Aerts O, Naessens T, Dandelooy J, Leysen J, Lambert J et al.
Contact dermatitis, 2017
→
Isosteareth-10
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Steareth-10
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Steareth-10 Allyl Ether/Acrylates Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Steareth-100
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Steareth-100/PEG-136/HDI Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Isosteareth-10
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Steareth-10
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Steareth-10 Allyl Ether/Acrylates Copolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Steareth-100
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Steareth-100/PEG-136/HDI Copolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Verified Jun 2026
Data: CosIng · EWG · CIR