Indiana State Beauty Practice Exam

What ingredient is often used in exfoliants to aid in removing dead skin cells?

1. Salicylic acid

2. Hyaluronic acid

3. Alpha hydroxy acids (AHAs)

4. Vitamin C

The correct answer is: Alpha hydroxy acids (AHAs)

The use of alpha hydroxy acids (AHAs) in exfoliants is widely recognized for their effectiveness in removing dead skin cells. AHAs are water-soluble acids derived from fruits and milk, commonly used in skincare products for their ability to enhance skin texture and promote cell turnover. By loosening the bonds between skin cells, they facilitate the shedding of the outer layer of dead skin, leading to a smoother and more radiant complexion. While salicylic acid is also effective as an exfoliant, particularly for oily and acne-prone skin, it is categorized as a beta hydroxy acid (BHA) and primarily works on the oilier parts of the skin. Hyaluronic acid, on the other hand, is known for its moisturizing properties rather than exfoliation, and vitamin C is celebrated for its antioxidant benefits and skin-brightening effects, but it does not serve the primary role of exfoliating the skin. Thus, AHAs are distinctly recognized for their exfoliating properties, making them the correct choice in this context.