Soyamide DEA
AKA “Soy Diethanolamide, Soybean Amide DEA
Synthetic
Ingredient Facts
Soyamide dea
AKA: Soy Diethanolamide, Soybean Amide DEA
Synthetic · Cleansing · EWG: 4
Plant-Derived Synthetic
Cleanser
Emulsifier
Synthetic
Clean
A plant-based cleanser derived from soy that helps create smooth, stable formulas with a luxurious lather. Gentle yet effective for removing impurities.
CAS #
68425-47-8
See origin →
Functions
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Foam Boosting
Viscosity Controlling
Stabilizes Emulsion
Cleansing Surfactant
Emulsifier
Boosts Lather
Traditional Use
A synthetic surfactant derived from soybean oil, developed in the late 20th century. Used in cleansing products to create lather and improve cleaning efficacy.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Caution
Allergen Warning
⚠️ Soy
EWG
4
CIR
Insufficient
Pregnancy
Caution
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USAunder review
EUpermitted
JAPANpermitted
CANADApermitted
Verified Feb 2026
Data: CosIng · EWG · CIR
Soyamide DEA — Duck Heart Ghost