Magnesium Isododecylbenzenesulfonate

AKA: Magnesium dodecylbenzenesulfonate, 27479-45-4, Magnesium dodecylbenzenesulphonate, Magnesium dodecyl benzene sulfonate, Benzenesulfonic acid, Magnesium salt, Magnesium salt (2:1)
Synthetic
Cleanser
Not Clean
Magnesium dodecylbenzenesulphonate
Formula
C36H58MgO6S2
Mol. Weight
675.30
CAS #
27479-45-4
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 synthetic surfactant developed in the mid-20th century as part of modern detergent chemistry. Created to improve cleaning efficacy in personal care products without traditional precedent.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper
⚖️Regulatory1 listing
🛡️Safety-assessed0 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR