PEG-16 Soy Sterol
AKA “Polyethylene Glycol 16 Soy Sterol”
Surfactant
Ingredient Facts
Peg-16 soy sterol
AKA: Polyethylene Glycol 16 Soy Sterol
Surfactant · Emulsifying · EWG: 5
Synthetic
Cleanser
Emulsifier
Not Clean
Sterols, soya (Glycine soja), ethoxylated (16 mol EO average molar ratio)
See origin →
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Emulsifier
Mixes Oil & Water
Traditional Use
A synthetic ingredient combining polyethylene glycol with soy plant sterols. Developed in the late 20th century to provide plant-derived conditioning and skin barrier support in modern skincare formulations.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Allergen Warning
⚠️ Soy
EWG
5
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
medical-approval
all-shades-safe
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR