Dipropylene Glycol
Reviewed by Rosie · Last updated 14 Aug 2026
Also known as: Propylene Glycol
Synthetic slip agent, texturizer, and solvent
EWG Safety Score
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What Is Dipropylene Glycol?
Dipropylene glycol is a synthetic slip agent, texturizer, and solvent, the latter a common use when combined with plant extracts, since it enhances their penetration into skin. It is a byproduct made in the production of propylene glycol. Its raw form is a colorless, odorless liquid. In cosmetics, it is used in concentrations as low as .004% to as high as 50% in some perfumes.\n\nThe colorless and odorless nature of this material as well as its solvent properties for aromatic extracts and ingredients makes it a popular solvent used in fragrance compounding.\n\nThe independent Cosmetic Ingredient Review panel has ruled dipropylene glycol is safe as used in cosmetics.
Clinical Evidence & References
Published Research
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Toxicology in Vitro, December 2020, Volume 69 Toxicology in Vitro, 2020
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International Journal of Pharmaceutics: X, December 2019, Volume 1, ePublication International Journal of Pharmaceutics: X, 2019
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International Journal of Toxicology, 2006, Volume 25, Supplement 2, pages 1-89 International Journal of Toxicology, 2006
How widely it's used
Regulatory information
Standardised cosmetic-ingredient identifiers used by regulators.
Show identifiers
- INCI Name
- DIPROPYLENE GLYCOL
- EC Number
- 203-821-4 / 246-770-3
- Function
- Masking, Perfuming, Solvent, Viscosity Controlling
From the Clinic
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