Montana Cosmetology Licensure Practice Exam

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Prepare for the Montana Cosmetology Licensure Exam with our practice tests. Featuring multiple-choice questions, detailed explanations, and study aids to enhance your understanding and confidence. Gear up for your licensure exam now!

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Which common skin care ingredient is often used for exfoliation?

Salicylic acid
Glycolic acid
Alpha hydroxy acids (AHAs)
Hyaluronic acid

The correct answer is: Alpha hydroxy acids (AHAs)

Glycolic acid, which is classified as an alpha hydroxy acid (AHA), is widely recognized for its effectiveness in exfoliating the skin. AHAs work by breaking down the bonds between dead skin cells on the surface, which facilitates their removal and promotes the emergence of fresh, new skin underneath. This process not only improves skin texture and tone but also enhances overall radiance, making it a popular choice in skincare routines focused on exfoliation. While salicylic acid is also used for exfoliation, particularly for treating acne due to its ability to penetrate and clean out pores, it primarily functions as a beta hydroxy acid (BHA) and is more suited for oily or acne-prone skin rather than general exfoliation purposes. Hyaluronic acid, on the other hand, is known for its hydrating properties and does not serve an exfoliation role in skincare. Therefore, AHAs, including glycolic acid as a specific example, are the most commonly associated ingredients with the exfoliation process, making it the correct answer to this question.