Which of the following is a common ingredient in exfoliating facial scrubs?

Alpha hydroxy acids (AHAs) are commonly used in exfoliating facial scrubs due to their ability to effectively dissolve the bonds that hold dead skin cells together on the skin's surface. This action facilitates the removal of these cells, promoting a smoother and brighter complexion. AHAs, such as glycolic acid and lactic acid, are derived from natural sources like fruits and milk, making them suitable for a wide range of skin types. Their use in exfoliation can also enhance skin texture and even tone.

While salicylic acid is often used for its acne-fighting properties and can contribute to exfoliation, it is primarily effective for oily and acne-prone skin. Ceramides, on the other hand, are known for their moisturizing and barrier-repairing properties rather than exfoliation. Hyaluronic acid is chiefly recognized for its hydrating capabilities, attracting and retaining moisture in the skin. Each ingredient serves its unique purpose, but when it comes to exfoliating, AHAs stand out as the primary choice in scrubs.