Tripropylene Glycol

AKA: Propylene Glycol Oligomer
Synthetic
Antioxidant
Humectant
Emulsifier
Clean
OriginSynthesized from propylene oxide and propylene glycol through successive glycol polymerization reactions. Produced via catalytic polymerization where propylene oxide is sequentially added to propylene glycol molecules.
Propanol, [(1-methyl-1,2-ethanediyl)bis(oxy)]bis-
CAS #
24800-44-0
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Locks In Moisture
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Yes
Restricted By
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR
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