PPG-3-Isodeceth-1
AKA “Polypropylene Glycol 3 Isodeceth-1
Synthetic
Ingredient Facts
PPG-3-Isodeceth-1
AKA: Polypropylene Glycol 3 Isodeceth-1
Synthetic · Emollient · EWG: 4
Synthetic
Emollient
Cleanser
Skin Conditioner
Synthetic
Clean
A lightweight moisturizer that softens and smooths skin, helping it stay hydrated and supple throughout the day.
CAS #
155683-77-5
Form
Liquid
See origin →
Functions
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Locks In Moisture
Traditional Use
Synthetic emulsifier developed in the mid-20th century as part of the polypropylene glycol family. Created to improve the mixing of oil and water-based ingredients in cosmetic formulations.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Insufficient
Pregnancy
Yes
CIR Safety Findings
Not an Irritant
medical-approval
all-shades-safe
Regulatory Status
USAunder review
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR