PSI Barbering Practice Exam

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Study for the PSI Barbering Exam. Prepare yourself with multiple choice questions and detailed explanations designed to help you succeed. Build your confidence and knowledge as you get ready for your licensing exam in the barbering profession!

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An example of a water-in-oil emulsion is:

Shampoo
Cold cream
Hair gel
Aqueous lotion

The correct answer is: Cold cream

A water-in-oil emulsion consists of water droplets dispersed in an oil phase, creating a thick, creamy texture. Cold cream is a classic example of such an emulsion, as it typically contains a significant amount of oil, such as mineral oil or petroleum, along with water and emulsifiers to stabilize the mix. The predominant oily base helps to provide a rich, moisturizing effect, making it suitable for applications like cleansing or moisturizing the skin. In contrast, choices like shampoo and hair gel are primarily water-based products with emulsifiers. These products typically do not contain a higher oil content, which is what characterizes a water-in-oil emulsion. Aqueous lotions also lean towards oil-in-water emulsions, wherein oil is dispersed in water, making them lighter and less creamy compared to cold creams. Therefore, cold cream stands out as the correct example of a water-in-oil emulsion due to its specific formulation and texture.