Magnesium Oleth Sulfate
AKA “Magnesium oleth sulfate”
Synthetic
Ingredient Facts
Magnesium oleth sulfate
Synthetic · Cleansing · EWG: 4
Synthetic
Cleanser
Synthetic
Clean
A gentle cleansing agent that removes dirt and oil while keeping skin feeling soft and comfortable.
CAS #
87569-97-9
Form
Powder
See origin →
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
Protects skin from free radical damage caused by UV, pollution, and stress
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.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Agencies
Verified Feb 2026
Data: CosIng · EWG · CIR