Colorado Esthetician Written Practice Exam

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In an oil-in-water emulsion, what is dispersed in what?

Oil droplets in water
Water droplets in oil
Oil particles in solid fat
Water particles in gas

The correct answer is: Oil droplets in water

In an oil-in-water emulsion, the correct answer is that oil droplets are dispersed in water. This type of emulsion is commonly used in skincare products such as lotions and creams. The oil droplets are dispersed within the continuous phase of water, allowing for better absorption and hydration of the skin. Choice B, water droplets in oil, describes a water-in-oil emulsion, which is different from the scenario described in the question. Choice C, oil particles in solid fat, and choice D, water particles in gas, do not accurately describe the composition of an oil-in-water emulsion.