Add time:07/12/2019 Source:sciencedirect.com
It is known that an oil-in-water emulsion increases in consistency and stability on addition of cetostearyl alcohol. When either cetyl alcohol or stearyl alcohol was added individually, the emulsion stability decreased. On storage at room temperature, unstable emulsions decreased in consistency and many particles (not visible immediately after preparation) appeared. The particles were determined to be crystals of the alcohol added. When both alcohols were included in the formulation simultaneously in the appropriate ratio, the emulsions were stable and did not show such changes. This difference in stability can be explained in relation to polymorphism of the alcohols.
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