PPG-38-Buteth-37
AKA “Polypropylene Glycol 38 Buteth-37
Surfactant
Ingredient Facts
PPG-38-Buteth-37
AKA: Polypropylene Glycol 38 Buteth-37
Surfactant · Cleansing · EWG: 1
Synthetic
Cleanser
Skin Conditioner
Hair Care
Clean
Oxirane, methyl-, polymer with oxirane, monobutyl ether
CAS #
9038-95-3
Form
Liquid
See origin →
Functions
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
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
Modern synthetic emulsifier and surfactant created to stabilize and improve texture in cosmetic products.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: CosIng · EWG · CIR