Crafting Cosmetics
Propanediol (1,3-Propanediol)
Propanediol (1,3-Propanediol)
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Product Overview
Propanediol is a plant-derived cosmetic raw material valued for its humectant, skin-conditioning, and texture-enhancing role in professional cosmetic formulations. In water-based serums, moisturizers, masks, and hair care applications, it helps support a hydrated skin feel, improved spreadability, and overall sensory elegance. Its light, comfortable finish makes it a useful corn-sugar-derived alternative to petroleum-based glycols in modern skin care formulations.
Key Benefits & Cosmetic Applications
Propanediol supports formulation performance across skincare, hair care, and makeup systems. It is especially relevant for formulators seeking a naturally derived ingredient that contributes to hydration, texture enhancement, and comfortable skin feel.
- Humectant Hydration: Helps attract and retain moisture, supporting a soft, supple feel in moisturizers, serums, masks, and leave-on hair products.
- Texture Enhancement: Improves the sensory profile of formulations by supporting smooth spreadability and a comfortable, elegant finish on skin and hair.
- Active Performance Support: Helps improve the distribution and skin contact of selected cosmetic actives. Finished-product performance, including any penetration-related claim, should be validated through formulation testing.
- Versatile Application Range: Suitable for a broad range of professional cosmetic formulations, including skin care formulations, hair care applications, and makeup concepts such as foundations, lipsticks, and eyeshadows.
- Plant-Derived Alternative: Derived from corn sugar, Propanediol offers a renewable, vegan-friendly option for formulators seeking an alternative to petroleum-based glycols.
Common Cosmetic Applications
- Skincare & Facial Systems
- Hair & Scalp Care Applications
- Color Cosmetics & Anhydrous Systems
- Functional Systems: Preservatives & Active Delivery
Technical Profile & Specifications
| Property | Specification |
|---|---|
| INCI Name | Propanediol |
| CAS Number | 504-63-2 |
| Appearance | Clear, colorless, viscous liquid with low characteristic odor |
| Purity / Active Content | ≤ 100.0 % |
| Solubility | Soluble in water |
| Functional Class / Role | Natural Humectant |
| Suggested Usage Rate | 1.0 – 10.0% |
| Recommended Processing Phase | Water phase or cool-down phase; confirm heat tolerance and optimal phase placement through stability testing. |
| Shelf Life & Storage |
2 years. Store in a dry place in a tightly sealed container. Avoid exposure to direct sunlight, moisture, and excessive heat. |
Formulation & Processing Guidelines
When formulating with Propanediol, practical bench testing is recommended to confirm sensory performance, stability, and compatibility within the finished product.
How to Incorporate
- Add Propanediol to the water phase of toners, essences, water-based serums, gel serums, and aqueous mask systems.
- For O/W emulsions, creams, and lotions, evaluate addition to either the water phase or cool-down phase based on the overall formula architecture and heat sensitivity of other ingredients.
- In hair care applications such as conditioners, masks, and leave-in systems, incorporate with the aqueous phase or cool-down phase and confirm homogeneity.
- In makeup systems, including foundations, lipsticks, and eyeshadows, assess compatibility with pigments, binders, waxes, and emollients during preliminary trials.
Compatibility
- Propanediol is commonly used in water-based systems and can be evaluated for use in stable emulsions, gel creams, toners, and serums.
- Compatibility with electrolytes, thickeners, film formers, pigments, and fragrance systems should be confirmed in the finished formulation.
- pH sensitivity, salt sensitivity, and interaction with other solvents or humectants should be assessed through stability and compatibility testing.
- Where compatibility data is uncertain or unavailable, formulators should conduct appropriate stability, microbiological, and packaging compatibility testing.
Formulation Tips
- Start at the lower end of the usage range to evaluate sensory impact, viscosity response, and overall skin feel.
- Combine with other water-soluble humectants to support hydration-focused serums, toners, and moisturizers.
- Use Propanediol to improve the sensory elegance of water-based serums and lightweight gel creams without overloading the formula.
- If using Propanediol to support active ingredient performance, validate final product performance claims through appropriate cosmetic testing.
- For professional cosmetic formulations, confirm batch-to-batch consistency and final formula stability before scaling production.
Suggested Applications
- Water-based serums and gel serums
- Moisturizers, creams, and gel creams
- Face masks and wash-off masks
- Hair conditioners, hair masks, and scalp treatments
- Foundations, lipsticks, and color cosmetics
Sustainability & Ethical Profile
Propanediol is derived from corn sugar, a renewable plant-based feedstock, making it a naturally derived alternative to petroleum-based glycols. Its plant-derived origin supports conscious formulation choices while maintaining the performance characteristics expected in modern skin care formulations, hair care applications, and makeup systems.
In alignment with Crafting Cosmetics sourcing standards, this ingredient is vegan-friendly and cruelty-free.
Regulatory & Safety Disclaimer
Disclaimer: This product is supplied as a cosmetic raw material for external use only. It is intended for cosmetic and personal care formulation applications only and should not be used as a finished product.
Technical Documentation
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