Propylene glycol, a colorless and odorless liquid, serves various functions across industries, including pharmaceuticals, cosmetics, food, and beverages. In the pharmaceutical sector, propylene glycol is commonly used as a solvent and vehicle for active pharmaceutical ingredients in oral, topical, and injectable medications. Its ability to dissolve a wide range of substances makes it invaluable for formulating liquid and semisolid dosage forms such as syrups, solutions, creams, and gels. Propylene glycol enhances the stability, solubility, and bioavailability of active ingredients, ensuring optimal drug delivery and efficacy. Moreover, its low toxicity and compatibility with other excipients make it a preferred choice for pharmaceutical formulations, contributing to the safety and effectiveness of medications.

Beyond pharmaceuticals, propylene glycol finds extensive applications in cosmetics and personal care products, where it acts as a humectant, solvent, and stabilizer. Its moisturizing properties help retain skin moisture, making it a common ingredient in skincare products such as lotions, creams, and moisturizers. Additionally, propylene glycol improves the texture and consistency of cosmetic formulations, ensuring smooth application and product integrity. In the food and beverage industry, propylene glycol serves as a food additive, flavor carrier, and preservative. It imparts sweetness and moisture to food products, extends shelf life, and enhances flavor profiles, contributing to the overall quality and palatability of various consumables.