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Methods & Processes
Comparatively Speaking: Emulsion vs. Invert Emulsion
Posted: November 21, 2006
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There are still more o/w emulsifiers available than w/o emulsifiers but the need for improved performance has encouraged many companies to develop new and effective invert emulsifiers. Silicone -based emulsifiers are one of the new breeds. Silicone surfactants allow the formulator to tailor external phases to the precise needs of new and improved products such as substantive sunscreens.
In many emulsions, the ratio of oil to water often is 1:1; this means that the emulsifier is often the deciding factor in the type of emulsion formed. There are meta-stable emulsions on the market that invert from o/w to w/o as the water phase evaporates from the skin. The resulting product gives improved water resistance.
In the personal care industry, there is still great potential for creative cosmetic chemists to develop improved emulsions that provide consumer-perceivable advantages over what is currently available.
Emulsion Technology and More!
Formulating Strategies in Cosmetic Science includes an entire section on emulsions including evaluating new emulsions, optimizing emulsions and technology. You will also find formulating for infant care products such as wipes and underarm personal care formulating. Want to know more?