Sodium Starch Octenylsuccinate

Sodium Starch Octenylsuccinate 1
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Sodium Starch Octenylsuccinate 2
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AKA: Modified Starch, Thickener
Synthetic
Emulsifier
Clean
OriginDerived from plant starches, commonly sourced from corn, potato, or tapioca plants. Modified through octenylsuccinylation, chemically attaching succinic anhydride to starch molecules.
Starch, esters with sodium hydrogen octenylbutanedioate
CAS #
66829-29-6, 52906-93-1, 70714-61-3
Form
Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Absorbent
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Viscosity Controlling
Anti-Inflammatory
Antimicrobial
Fights Acne
Absorbs excess oil
Keeps product blended
Controls product thickness
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
Leave-on0.0001–0.26%
Rinse-off0.0023–0.026%
0%50%100%
CIR reported use · 2013 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR