If you are sourcing premium Propylene glycol for cosmetic manufacturing, feel free to contact us. We supply lab‑test samples, full technical documents and formulation reference suggestions.
Propylene Glycol – Moisturizing Solvent for Serums
Propylene glycol is a classic polyol humectant and solvent that moisturizes skin, helps dissolve other ingredients and improves skin feel in everyday formulas.
- Moisturizes and helps dissolve actives in a formula
- Improves skin feel and spreadability in emulsions and toners
- A widely used polyol for serums, lotions and cleansers
Propylene glycol | Bulk Cosmetic Grade Propylene Glycol Raw Material Supplier
Propylene glycol
Buy bulk Propylene glycol, a versatile cosmetic polyol widely used as humectant, solvent, solubilizer, viscosity regulator and preservative booster in skincare, haircare and makeup formulations. It provides balanced moisturizing performance, improves active ingredient solubility and helps stabilize aqueous systems. Manufactured under GMP‑compliant workshops, free R&D sample available, complete COA, MSDS, TDS documents supplied, worldwide bulk shipping service.
Product Specification
| Item | Specification |
|---|---|
| Product Name | Propylene glycol |
| INCI Name | Propylene Glycol |
| CAS No. | 57‑55‑6 |
| Molecular Formula | C₃H₈O₂ |
| Molecular Weight | 76.09 |
| Appearance | Colorless clear viscous liquid, almost odorless |
| Purity | ≥99.5% Cosmetic Grade |
| Solubility | Miscible with water, ethanol and glycerin; insoluble in mineral oil |
| Optimal Formulation pH | 5.0‑8.0 |
| Heavy Metal | Meet cosmetic raw material standards |
| Recommended Addition Range | 2.0%‑15.0% |
| MOQ | 1kg |
| Shelf Life | 2 years under sealed proper storage |
What Is Propylene glycol?
Propylene glycol is a low‑molecular‑weight diol with excellent water miscibility and mild moisturizing properties. It is one of the most widely used polyols in the cosmetic industry, functioning as humectant, solvent, solubilizer, viscosity regulator, freezing point depressant and preservative booster.
Unlike stronger humectants such as glycerin, propylene glycol offers a lighter skin feel and better solubilizing capacity for many cosmetic actives, plant extracts and fragrance components. It also helps reduce the freezing point of water‑based formulations, improving product stability during cold storage and transportation. Our cosmetic‑grade propylene glycol maintains stable batch‑to‑batch quality. Each batch provides full technical documents for cosmetic registration and formula R&D.
Core Advantages Of Our Propylene glycol
Balanced Moisturizing Performance
Absorbs moisture and reduces transepidermal water loss, helping maintain skin hydration without the heavy sticky feel sometimes associated with higher glycerin concentrations.
Excellent Solubilizing Capacity
Improves the solubility of poorly water‑soluble active ingredients, plant extracts, fragrances and functional additives in aqueous cosmetic systems, reducing the risk of precipitation and phase separation.
Preservative‑boosting Effect
Synergizes with common cosmetic preservatives to enhance microbial inhibition, helping reduce the required preservative dosage while maintaining broad‑spectrum protection.
Viscosity & Freezing Point Regulation
Adjusts formulation viscosity and effectively lowers the freezing point of water‑based products, helping prevent freezing, layering and texture damage under low‑temperature conditions.
Wide Formulation Compatibility
Compatible with most cosmetic raw materials, including surfactants, thickeners, active ingredients, plant extracts and emulsions, making it suitable for almost all skincare, haircare and color cosmetic systems.
Reliable Quality & Full Technical Support
Purity ≥99.5%, strict impurity control, support third‑party independent lab testing. Provide COA, MSDS, TDS and practical formulation suggestions for your R&D team.
How Propylene glycol Works In Cosmetic Formulations
Propylene glycol works through multiple formulation mechanisms. Its hydroxyl groups enable water molecule binding, contributing to moisturization. Its polar structure enhances the solubility of hydrophobic raw materials in water‑phase systems. It also changes microbial cell‑membrane permeability, assisting preservatives in penetrating microorganisms more effectively. In addition, it lowers the freezing point of aqueous systems and improves low‑temperature stability.
Note: Propylene glycol is a conventional cosmetic polyol raw material. Formulators still need to carry out compatibility test, stability test and finished‑product safety assessment before mass‑production. Final performance depends on formula system, dosage and matched auxiliary ingredients.
Main Application & Suitable End‑Products
Core Formulation Benefits
- ‑Balanced moisturizing with relatively light skin feel
- ‑Improve solubility of actives, plant extracts and fragrances
- ‑Enhance preservative system efficiency
- ‑Adjust viscosity and improve low‑temperature stability
- ‑Wide compatibility with most cosmetic formulations
Recommended Finished Products
- ‑Moisturizing toner, essence, serum and gel
- ‑Facial lotion, cream and mask products
- ‑Plant extract skincare formulations
- ‑Sensitive‑skin soothing repairing series
- ‑Haircare products, shampoo and conditioner
- ‑Water‑based color cosmetics and makeup removers
Formulation Guide: Dosage, Dissolving & Critical Notes
Recommended addition range: Conventional skincare formula: 2.0%‑15.0%. Higher dosage can be considered for special solubilizing, anti‑freezing or viscosity‑regulating demands, but finished‑product safety evaluation is required.
Dissolving method: Miscible with water, ethanol and glycerin. Can be directly added into water‑phase at normal temperature or heating stage, easy to mix evenly. Can be used to pre‑dissolve partial actives, plant extracts and fragrances before adding into the main formula.
Suggested synergistic ingredients: Combine with glycerin, sodium hyaluronate and panthenol for compound moisturizing effect; match with various preservatives to boost antiseptic performance; cooperate with plant extracts to improve raw‑material solubility.
Important formulation reminders
- ‑Normal temperature mixing is available; high‑temperature heating is not required.
- ‑Stable at pH 5.0‑8.0, keep away from strong acid and strong alkali long‑term environment.
- ‑Pay attention to total polyol content and skin feel in finished products.
- ‑Seal and store in cool dry place.
- ‑Only for cosmetic raw‑material use. Finished‑product safety & stability test is mandatory before mass‑production.
Packaging, MOQ & Global Shipping
- ‑Small package: 1kg /5kg PE bottle
- ‑Bulk package: 200kg iron drum
- ‑Custom package: Custom label service for large‑volume orders
- ‑MOQ: 1kg
- ‑Shipping: DHL, FedEx, air freight, sea freight, global door‑to‑door delivery
- ‑Lead time: 3‑7 working days for sample; 7‑15 working days for bulk order
Storage & Shelf‑Life
Storage Conditions
Store in tightly closed container. Keep in cool, dry, well‑ventilated place. Protect from high temperature and direct sunlight. Seal tightly after opening.
Shelf Life
2 years under original sealed and proper storage environment.
Certifications & Documents
- ‑GMP compliant production workshop
- ‑COA, MSDS, TDS documents available for each batch
- ‑Accept third‑party lab testing
- ‑Qualified for multi‑functional cosmetic raw‑material formulation
Frequently Asked Questions
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Q1: What is Propylene glycol used for in cosmetics?
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Q2: Is Propylene glycol safe for sensitive skin?
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Q3: What is the recommended adding dosage?
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Q4: What is the difference between propylene glycol and butylene glycol?
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Q5: Can you offer COA MSDS and free R&D samples?
A: Yes, please send inquiry via contact form or WhatsApp to get samples and complete technical documents.
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