Propylene Glycol – Glossar
Brief Definition
Propylene Glycol is a moisturizing excipient used in cosmetic products as a solvent, humectant, and carrier for active ingredients.
What is Propylene Glycol?
Propylene Glycol is a colorless, odorless liquid with hygroscopic properties. This ingredient is used in cosmetics, pharmaceuticals, and the food industry to bind moisture and evenly distribute active ingredients. In cosmetic formulations, Propylene Glycol serves as a humectant, solvent, and stabilizer. Synonyms and related terms include humectant, solvent, and carrier.
Function and Effect
Propylene Glycol attracts water and helps to moisturize the skin. At the same time, it improves the absorption of other active ingredients and ensures even distribution within the product.
Properties
Colorless and odorless
Hygroscopic
Water-soluble
Improves active ingredient distribution
Stabilizing in formulations
Benefits at a Glance
Moisturizes
Improves absorption of active ingredients
Ensures even textures
Increases product stability
Versatile
Tolerance and Safety
Propylene Glycol is considered cosmetically safe when used in approved concentrations. In rare cases, it can cause irritation in very sensitive skin, which is why it is usually carefully dosed.
Typical Applications
Face and body care
Creams and lotions
Cleansing products
Serums
Dermocosmetic products
Frequently Asked Questions (FAQ)
What does Propylene Glycol do in cosmetics?
It binds moisture and improves active ingredient absorption.
Is Propylene Glycol harmful to the skin?
No, in tested concentrations, it is considered safe.
Is Propylene Glycol the same as Glycerin?
No, both are humectants, but they differ chemically.
Is Propylene Glycol suitable for sensitive skin?
In many cases, yes, but very sensitive skin may react individually.
Is Propylene Glycol of natural origin?
It is synthetically produced but is well-researched and regulated.
Conclusion
Propylene Glycol is a proven, versatile ingredient that moisturizes, transports active ingredients, and stabilizes cosmetic products.







