Description
Propanediol 1,3
Humectant • Moisturizing • Solvent • Skin & Hair Care
Propanediol 1,3 is a versatile, water-soluble cosmetic ingredient commonly used as a humectant, solvent, and formulation aid in skincare, haircare, and personal-care products. It helps attract moisture to the skin while also improving the feel and spreadability of finished formulations, making it a useful ingredient for both leave-on and rinse-off products.
Propanediol 1,3 can help create formulations with a smooth, lightweight, and comfortable skin feel. It is also useful as a solvent and can assist with the incorporation and dispersion of certain cosmetic ingredients in water-based formulations.
Key Benefits
-
Humectant: Helps attract and retain moisture.
-
Moisturizing: Supports a soft, hydrated skin feel.
-
Solvent: Helps dissolve and incorporate certain cosmetic ingredients.
-
Texture Enhancer: Can improve the spreadability and sensory feel of formulations.
-
Water Soluble: Easily incorporated into water-based products.
-
Versatile: Suitable for skincare, haircare, makeup, and personal-care formulations.
-
Lightweight Feel: Helps provide hydration without leaving a heavy or greasy finish.
Applications
Propanediol 1,3 is suitable for a wide range of handmade products, including:
-
Facial serums
-
Hydrating serums
-
Moisturizers
-
Lotions and creams
-
Facial mists
-
Makeup setting sprays
-
Makeup spray mists
-
Toners
-
Body care products
-
Shampoos
-
Conditioners
-
Hair treatments
-
Cleansing products
-
Soothing and clarifying formulations
Solubility
Water Soluble
Propanediol 1,3 is readily soluble in water and can be incorporated into the aqueous phase of formulations.
Recommended Usage
1–10%, with levels up to 20% possible depending on the formulation and desired properties.
Lower concentrations may be suitable for general humectant and solvent functions, while higher concentrations can be used when additional moisturizing or solvent properties are desired.
Technical Specifications
INCI: PropanediolAppearance: Clear, colorless diolOdor: Low, sweetSolubility: Water SolublepH: NeutralRecommended Usage: 1–10%; up to 20%
Storage
Store in a sealed container within the temperature range of 0–50°C (32–122°F). If the container is opened, reseal it and continue storing within this temperature range while avoiding prolonged exposure to water and oxygen.
For extended storage, the use of an inert gas such as nitrogen may be beneficial.
Ideal for Handmade Formulators
Propanediol 1,3 is an excellent multi-purpose ingredient for handmade formulators looking to add hydration, improved skin feel, and solvent properties to their products. It works particularly well in products such as basic lotions, makeup spray mists, soothing serums, facial treatments, and other water-based formulations.

