Propylene Glycol Heptanoate
molecular structure · PubChem
AKA: 2-Hydroxypropyl heptanoate, 7249-54-9, CAPMUL 907P, PROPYLENE GLYCOL 1-HEPTANOATE
Synthetic
Cleanser
Skin Conditioner
Clean
Ester of propylene glycol and heptanoic acid
Effective at 1.0%
Formula
C10H20O3
Mol. Weight
188.26
CAS #
57-55-6
Form
Liquid
Functions
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
Synthetic ester developed in the mid-20th century as a lightweight emollient for cosmetics. Designed to provide moisture without heaviness or greasiness on skin.
EWG
1
CIR
Safe as used
Pregnancy
Yes
Restricted By
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
9.9e-05%
2.0%
0%14%
Reported use
CIR reported use: 0.000099-2
Regulatory Agencies
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR