Magnesium Oleth Sulfate

Magnesium Oleth Sulfate 1
Synthetic
Cleanser
Clean
Poly(oxy-1,2-ethanediyl), .alpha.-sulfo-.omega.-(9-(Z)-octadecenyl)oxy-, magnesium salts (2:1) (1-4 mol EO average molar ratio)
CAS #
87569-97-9
Form
Powder
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Surfactant Cleansing
Anti-Inflammatory
Fights Acne
Antioxidant
Removes dirt and impurities
Lifts away dirt and oil
Traditional Use
A modern surfactant developed in the latter half of the 20th century from oleic acid derivatives. Created to improve cleansing performance and stability in personal care products.
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR