South Carolina Cosmetology Practice Exam 2025 - Free Cosmetology Practice Questions and Study Guide

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What is the key ingredient in many exfoliating skin treatments?

Retinol

Alpha hydroxy acids (AHAs)

The key ingredient in many exfoliating skin treatments is alpha hydroxy acids (AHAs). AHAs are water-soluble acids derived from fruits and milk, and they work by loosening the bonds that hold dead skin cells together on the skin's surface, effectively aiding in their removal. This process helps to reveal fresher, smoother skin underneath and can improve the appearance of fine lines, sun damage, and uneven skin tone.

Their effectiveness in promoting skin cell turnover makes AHAs a preferred choice in exfoliating products. Common examples of AHAs include glycolic acid and lactic acid, both of which are frequently included in cleansers, creams, and peels designed to enhance the skin's texture and overall appearance. These properties make them a staple ingredient in many aesthetic and dermatological treatments focused on achieving a more youthful and radiant complexion.

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Vitamin C

Collagen

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