AHA (Alpha Hydroxy Acid)
Definition
Alpha hydroxy acids are a group of water-soluble acids derived from fruits, milk, and sugar cane. The most common AHAs in skincare include glycolic acid (from sugar cane) and lactic acid (from milk). They work by loosening the bonds between dead skin cells on the surface of the skin, promoting gentle exfoliation and cell turnover. AHAs are particularly effective for improving skin texture, reducing the appearance of fine lines, evening out skin tone, and addressing sun damage. They also help the skin retain moisture. Because AHAs increase sun sensitivity, sunscreen is essential when using them. They are best suited for normal to dry skin types and are generally used at concentrations between 5% and 10% in at-home products.
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