PPG-4-Buteth-4
AKA “2-(1-butoxypropan-2-yloxy)ethanol, 2-((1-Butoxypropan-2-yl)oxy)ethan-1-ol
Synthetic
Ingredient Facts
PPG-4-Buteth-4
AKA: 2-(1-butoxypropan-2-yloxy)ethanol, 2-((1-Butoxypropan-2-yl)oxy)ethan-1-ol
Synthetic · Hair Conditioning · EWG: 4
Synthetic
Skin Conditioner
Hair Care
Synthetic
Clean
A lightweight conditioning agent that helps soften and smooth both hair and skin while improving moisture retention and texture.
CAS #
9038-95-3, 9065-63-8
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.
Locks in moisture
Traditional Use
A synthetic polypropylene glycol-based surfactant developed in the mid-20th century for use as an emulsifier and solubilizer in cosmetic formulations. Created to improve texture and stability in modern skincare and haircare products.
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