Calcium Starch Octenylsuccinate
AKA: Modified starch, Octenyl succinate starch calcium
Synthetic
Cleanser
Emulsifier
Clean
Calcium Starch Octenylsuccinate is the calcium salt of the reaction product of octenylsuccinic anhydride with Corn Starch
CAS #
194810-88-3
Form
Powder
Functions
Absorbent
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Viscosity Controlling
Surfactant Emulsifying
Anti-Inflammatory
Boosts Collagen
Antimicrobial
Absorbs excess oil
Mixes oil and water
Keeps product blended
Controls product thickness
Traditional Use
A modified starch compound developed for cosmetics as a suspending agent, absorbent, and texture enhancer in powders and creams.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-1
medical-approval
pregnancy-nursing-safe
all-shades-safe
Concentration Guide
Dermal absorption: 2%. Source: CIR Safety Assessment (CIR Seq 680).
Regulatory Agencies
Skin Types
●all-skin-types, gentle
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
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.
Verified Jun 2026
Data: CosIng · EWG · CIR