Lactic acid is an alpha hydroxy acid (AHA) primarily known for its surface-level exfoliation and moisture-supporting properties. Compared to some other AHAs like glycolic acid, its larger molecule size allows it to penetrate the skin more slowly, which can make the initial experience of exfoliation feel smoother and less potentially irritating for some users. This product contains a 15% concentration, which is more active than acid-infused toners or cleansers meant for daily use. It is designed to offer a noticeable resurfacing effect for those whose skin already tolerates exfoliating acids, helping to improve the look of texture and dullness. Because lactic acid is known to help the skin hold water, the exfoliation process can feel less drying. It is a specific chemical exfoliant chosen mainly for refining skin texture and improving a tired-looking tone, rather than for deep pore cleansing or targeting specific blemishes.