Diisobutyl Sodium Sulfosuccinate

AKA: Sodium 1, 4-diisobutyl sulfosuccinate, Aerosol IB, SODIUM DIISOBUTYL SULFOSUCCINATE, Butanedioic acid, 1, 4-bis(2-methylpropyl) ester, Sodium salt, MONAWET MB 45, 2-diisobutoxycarbonylethanesulphonate
Synthetic
Cleanser
Skin Conditioner
Not Clean
Sodium 1,2-diisobutoxycarbonylethanesulphonate
Formula
C12H21NaO7S
Mol. Weight
332.35
CAS #
127-39-9
Form
Liquid
State
Liquid
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.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Foam Boosting
Hydrotrope
Locks in moisture
Traditional Use
Synthetic mild surfactant created for gentle cleansing cosmetics. Developed to replace harsher cleansing agents while maintaining efficacy.
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-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: PubChem · CosIng · EWG · CIR