Washington Esthetician State Board Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Study for the Washington Esthetician Exam. Prepare with our multiple choice questions and detailed explanations to ensure you're ready for the exam. Ace your test with our practice tools!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which type of emulsifier is commonly used in the formulation of lotions?

Cationic emulsifiers
Nonionic emulsifiers
Anionic emulsifiers
Amphoteric emulsifiers

The correct answer is: Nonionic emulsifiers

Nonionic emulsifiers are most commonly used in the formulation of lotions because they are versatile and generally mild, making them suitable for a wide range of cosmetic applications. These emulsifiers do not carry a charge, which allows them to stabilize emulsions effectively without causing irritation to the skin. Their compatibility with both oil and water phases contributes to a smooth texture and stable product, which is particularly important for lotions that aim to hydrate and nourish the skin. In contrast, cationic emulsifiers, while beneficial for hair care products due to their conditioning properties, may not be suited for lotions primarily intended for the skin. Anionic emulsifiers can be effective in cleansing products but may cause irritation and are less common in skin care formulations. Amphoteric emulsifiers possess both positive and negative charges, which can lead to complex interactions in formulations. Therefore, nonionic emulsifiers are typically favored in the creation of lotions for their stability and mildness.