Petrolatum

Petrolatum is a mixture of saturated hydrocarbon commonly used as ointment base in topical formulation. A familiar everyday example of petrolatum is Vaseline. Petrolatum comes with a wide variety of brands, manufacturers, and grades. I have personally used Penreco Ultima, Snow White, and Super White for numerous formulations with decent outcomes. Application in Formulation Among …

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No Yield to Yield Stress

Semi-solid and liquid drug products display complex rheological behaviors, which have significant impact on patient compliance, product manufacturability and stability. Aside from Ketchup or toothpaste, there are ample examples of semi-solid and liquid dosage forms where the rheology plays a delicate role in product characteristics. For instance, a medicated shampoo should be easily poured out …

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