Polyglyceryl-4 Pentastearate
AKA “Polyglyceryl-4 Pentastearate
Synthetic
Ingredient Facts
Polyglyceryl-4 pentastearate
Synthetic · Emollient · EWG: 4
Plant-Derived Synthetic
Emollient
Cleanser
Emulsifier
Skin Conditioner
Plant Oil
Synthetic
Clean
A natural emollient derived from plants that helps blend and smooth product textures while conditioning skin with a soft, lightweight feel.
CAS #
99570-00-0
See origin →
Functions
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
Developed in the mid-20th century as a synthetic emulsifier derived from glycerin and stearic acid. Created to provide stable oil-in-water emulsions in cosmetic formulations without the inconsistencies of traditional natural emulsifiers.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR
Polyglyceryl-4 Pentastearate — Duck Heart Ghost