Propanediol
A versatile, plant-derived humectant that helps hydrate, improve skin texture, and enhance the stability and spreadability of formulations.
Propanediol, also known as 1,3-propanediol, is a biodegradable, plant-derived humectant and solvent commonly used in cosmetics and personal care products. It is derived from corn and serves as a natural alternative to petroleum-based glycols, such as propylene glycol.
As a humectant, Propanediol attracts and retains moisture in the skin, providing hydration and improving the skin’s overall texture. It also enhances the spreadability of formulations, making them easier to apply while promoting a smoother skin feel. Propanediol works well in both water-based and oil-based formulations, acting as a stabilizer and solubilizer for active ingredients.
Additionally, Propanediol can improve the stability of emulsions and extend the shelf life of products by preventing the crystallization of other ingredients. It is known for being gentle on the skin, making it suitable for sensitive skin formulations.
FEATURES
- Moisturizing – helps hydrate the skin by attracting moisture and retaining it.
- Improves texture – enhances the skin feel and spreadability of formulations.
- Solvent and stabilizer – aids in the solubilization of active ingredients and stabilizes emulsions.
- Plant-derived – sourced from corn, offering a more sustainable and natural alternative to synthetic glycols.
- Gentle on the skin – non-irritating, making it suitable for sensitive skin formulations.
BEST FOR
- Moisturizers
- Facial serums
- Shampoos and conditioners
- Body lotions
- Anti-aging treatments
- Cosmetic emulsions and gels
FORMULATION GUIDELINES
| INCI | Propanediol |
|---|---|
| Type | Humectant, solvent, stabilizer |
| Solubility | Water soluble |
| Use Rate | 2.0–5.0% typical, depending on the desired texture and hydration effect. |
| Best Phase | Water phase or cool-down phase (below 40°C) |
| pH Compatibility | Works well across a wide pH range (4.5–7.5). |
| Temperature Tolerance | Stable at typical formulation temperatures. For best results, add below 40°C in emulsions and creams. |
| Pro Tip | For better solubilization and texture enhancement, combine Propanediol with other humectants like glycerin or hyaluronic acid. It is especially effective when formulating products for dry or dehydrated skin. |
| Appearance | Clear, colorless liquid |
| Stability Notes | Stable in a wide range of formulations but should be stored in a cool, dry place to prevent any degradation. |
| Storage | Store in a cool, dry place, away from light and moisture, in a tightly sealed container. |
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Specs: Solubility = Water soluble (limited). pH = 4.0–5.5. Add = Add in cool-down ≤40°C.
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