Starch Diethylaminoethyl Ether

Starch Diethylaminoethyl Ether 1
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Starch Diethylaminoethyl Ether 2
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AKA: DEAE Starch, Modified Starch
Synthetic
Occlusive
Skin Conditioner
Not Clean
OriginDerived from plant starches, typically sourced from corn, potato, or tapioca plants. Modified through etherification with diethylaminoethyl groups attached to the starch backbone.
Starch, 2-(diethylamino)ethyl ether
CAS #
9041-94-5
Form
Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Antistatic
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks in moisture
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.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR's newest survey reports no concentration of use.
CIR · 2013 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR