Michigan Esthetician State Board Practice Exam

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Prepare for the Michigan Esthetician State Board Test. Study with flashcards and multiple choice questions, each question includes hints and explanations. Get equipped for your exam!

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Oleic acid, stearic acid, and caprylic acid fall under which category of ingredients?

Amino acids
Fatty acids
Essential oils
Mineral oils

The correct answer is: Fatty acids

Oleic acid, stearic acid, and caprylic acid are classified as fatty acids, which are carboxylic acids with long aliphatic chains. These acids are crucial components in various cosmetic and skincare formulations due to their ability to serve as emollients, moisturizers, and surfactants. They contribute to the overall texture and hydration of products, making them especially beneficial in lotions, creams, and oils. Fatty acids are known for their moisturizing properties and can help to restore the skin's natural barrier, providing both hydration and protection. Additionally, oleic, stearic, and caprylic acids can influence the consistency and stability of products, enhancing their performance on the skin. Other categories mentioned, such as amino acids or essential oils, comprise significantly different types of compounds with varied functions in cosmetics. Amino acids serve as building blocks for proteins and have their specific roles in skin health, while essential oils are concentrated plant extracts known for their aromatic properties and potential therapeutic benefits. Mineral oils belong to a different group entirely, as they are derived from petroleum and primarily act as occlusives rather than providing the intrinsic benefits of fatty acids.