What type of product uses emulsifiers to maintain mixture?

• A. Emulsions
• B. Lotions
• C. Oils
• D. Gels

Answer: (A)

Emulsions are mixtures of two liquids that don’t normally blend, like oil and water, kept together by an emulsifier. The emulsifier forms a stabilizing coating around droplets so they don’t merge and separate, giving a uniform product. This is why many creams and lotions—classic examples of emulsions—rely on emulsifiers to maintain the mixture. Oils by themselves are a single phase and don’t need an emulsifier to stay mixed, and gels are usually thickened aqueous or other types of formulations that don’t depend on emulsifiers to hold oil and water together. So the product type that uses emulsifiers to keep the mixture stable is an emulsion.