Soy Acid

AKA: Soybean Fatty Acid

Allergen Warning

⚠️ Soy

Synthetic

Emollient

Cleanser

Emulsifier

Skin Conditioner

Acid

Not Clean

Fatty acids, soya

CAS #

68308-53-2

Form

Liquid

State

Solid

Functions

Refatting

Emollient

Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.

Emulsifying

Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.

Locks In Moisture

Traditional Use

A modern cosmetic ingredient derived from soybean oil through hydrolysis or saponification. Used in skincare formulations as an emollient and to improve skin barrier function.

EWG

CIR

Safe as used

Pregnancy

Yes

CIR Safety Findings

Not a Sensitizer

medical-approval

all-shades-safe

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Skin Types

●all-skin-types

Best For

Dryness

Pregnancy & Breastfeeding Safe

Yes

The paper trail

🔬Peer-reviewed1 paper →

⚖️Regulatory1 listing →

🛡️Safety-assessed1 review →

Counts, not a verdict. A listing isn't a study. The trail, you decide.

Verified Jun 2026

Data: CosIng · EWG · CIR