Polyglyceryl-3 Diisostearate
AKA “Polyglyceryl-3 Diisostearate
Surfactant
Ingredient Facts
Polyglyceryl-3 diisostearate
Surfactant · Emulsifying · EWG: 1
Plant-Derived
Cleanser
Emulsifier
Clean
1,2,3-Propanetriol, homopolymer, isodecanoates (1:2) (3 mol glycerol average molar ratio)
Family
Unknown (Not directly plant-derived)
CAS #
66082-42-6, 85666-92-8
See origin →
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Emulsifier
Brightens Skin
Mixes Oil & Water
Traditional Use
Developed in the mid-20th century as a modern synthetic emulsifier derived from glycerin and isostearic acid. Created to provide stable emulsification in cosmetic formulations where traditional plant-based emulsifiers proved insufficient.
Skin Types
all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-1
medical-approval
pregnancy-nursing-safe
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
KP smoothing stick
Cocokind
 →
ceramide lip blur balm
Cocokind
 →
smooth + hydrate body stick duo
Cocokind
 →
retinol face + body duo
Cocokind
 →
flavored ceramide lip blur balm
Cocokind
 →
Liplux® Hydrating Lip Oil
COOLA
 →
3 Piece Classic Suncare Travel Set
COOLA
 →
Suncare Travel Essentials Set
COOLA
 →
holi (sun) spf 50 dewy tinted skin drops
Agent Nateur
 →
the body duo
Agent Nateur
 →
lactic acid cleanser duo
Agent Nateur
 →
the vitamin c and hyaluronic brightening duo
Agent Nateur
 →
holi (soleil) firming & plumping mineral spf 50 sunscreen
Agent Nateur
 →
the after (glow) set: ruby
Agent Nateur
 →
the after (glow) set: rose quartz
Agent Nateur
 →
Love + Rose Hydrating Serum
One Love Organics
 →
Color Balancer
Indie Lee
 →
The Brighten Up Essentials
RMS Beauty
 →
Supernatural Radiance Serum Broad Spectrum SPF 30 Sunscreen
RMS Beauty
 →
SunCoverup Super Tint Broad Spectrum SPF 50 Sunscreen
RMS Beauty
 →
Revealer Extra Bright
Kosas
 →
Glow I.V.
Kosas
 →
DreamBeam SPF 40 PA++++
Kosas
 →
The ILIA Look
ILIA Beauty
 →
Super Serum Skin Tint SPF 40
ILIA Beauty
 →
ReFresh Eye Brightener SPF 30 + Correcting Tint
RMS Beauty
 →
Super Serum Skin Tint SPF 30
ILIA Beauty
 →
SunCoverup Super Tint SPF 50
RMS Beauty
 →
Sun Tone Bronzing Drops - Soleil Parfait 2
Westman Atelier
 →
Sun Tone Bronzing Drops - Soleil Parfait 3
Westman Atelier
 →
Sun Tone Bronzing Drops - Soleil Parfait 4
Westman Atelier
 →
Sun Tone Bronzing Drops - Soleil Parfait 1
Westman Atelier
 →
True Skin Serum Concealer
ILIA Beauty
 →
Plump + Juicy Lip Booster
Kosas
 →
Revealer Concealer
Kosas
 →
Revealer Skin-Improving Foundation SPF 25
Kosas
 →
Back2Brow Pencil
RMS Beauty
 →
ReFresh Eye Brightener Broad Spectrum SPF 30 + Correcting Tint
RMS Beauty
 →
Bright Start Creamy Buildable Airbrush Concealer
LYS Beauty
 →
Speak Love Glossy Lip Treatment Oil
LYS Beauty
 →
High Fidelity Balancing Color Corrector
Exa Beauty
 →
Swipe Serum Concealer®
Tower 28 Beauty
 →
Soft Glide Lip Liner
SOSHE Beauty
 →
Verified Jun 2026
Data: CosIng · EWG · CIR