humectant

Propylene Glycol

Also known as 1,2-Propanediol
INCI: PROPYLENE GLYCOL
CAS 57-55-6 EC 200-338-0
pair of enantiomers
Generally Safe
This ingredient has a good safety profile based on available data.
Purpose

Function

Diol humectant, solvent, and penetration enhancer. Attracts water from dermis and environment into epidermis. Also functions as preservative booster and freeze-point depressant.
Profile

Properties

Silicone
Silicone free
Malassezia
Safe
Fungal Acne
Safe
Details

Description

pair of enantiomers

Reference

Identifiers

CAS Number
57-55-6
EC Number
200-338-0
INCI
PROPYLENE GLYCOL
Category
humectant
Updated
Apr 2, 2026