Propanediol
molecular structure · PubChem
AKA: 26264-14-2, Propandiol, Coupling Lavender Relax Premium massagelotion, Coupling Chamomile Relax Premium massagelotion, 1, 3-PROPANEDIOL (USP-RS), FEMA NO. 4753
Synthetic
Solvent
Clean
Propanediol is a cosmetic ingredient used as solvent, viscosity controlling. Rated low hazard by EWG.
Formula
C3H8O2
Mol. Weight
76.09
CAS #
504-63-2, 26264-14-2
Form
Liquid
Functions
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Viscosity Controlling
Dissolves Ingredients
Controls Viscosity
Antioxidant Protection
Reduces Inflammation
Fights Bacteria
Dissolves other ingredients
Controls product thickness
Traditional Use
Developed in the mid-20th century as a synthetic humectant and preservative booster. Created to replace glycerin in industrial and cosmetic applications where a less viscous, more stable moisture-binding agent was needed.
Skin Types
●all-skin-types, gentle
Best For
Dehydration
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
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Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR