North Dakota Cosmetology Practice Exam

What ingredient is commonly used in exfoliating scrubs?

1. Salicylic acid

2. Alpha hydroxy acids (AHAs) or physical exfoliants like sugar or salt

3. Glycolic acid

4. Retinol

The correct answer is: Alpha hydroxy acids (AHAs) or physical exfoliants like sugar or salt

Exfoliating scrubs typically contain physical exfoliants, such as sugar or salt, or chemical exfoliants like Alpha Hydroxy Acids (AHAs). The reason these components are effective is that they provide ways to remove dead skin cells from the surface of the skin, promoting a smoother and more radiant complexion. Physical exfoliants work by manually buffing away dead skin, while chemical exfoliants penetrate the skin to dissolve the bonds holding dead skin cells together, leading to their easier removal. AHAs, being water-soluble, are particularly effective for tackling dry and sun-damaged skin, making them a popular choice in many formulations. While other ingredients like salicylic acid, glycolic acid, and retinol have their own benefits—such as treating acne or improving skin texture—options typically labeled as "scrubs" emphasize the immediate physical exfoliation aspect provided by sugar, salt, or similar granular ingredients. Thus, the presence of these ingredients plays a crucial role in the efficacy of exfoliating scrubs.