Glycolic acid is an alpha hydroxy acid (AHA) derived from sugar cane and is widely recognised for its ability to exfoliate the skin's surface. With the smallest molecular size of all AHAs, it penetrates the skin effectively to dissolve the bonds between dead skin cells, revealing a brighter and more even complexion. Glycolic acid can also help improve the appearance of fine lines, post-inflammatory pigmentation and uneven skin texture while encouraging healthy skin cell turnover. Regular use leaves the skin looking more radiant and feeling softer and more refined.
In K-Beauty, glycolic acid is commonly found in toners, exfoliating serums, cleansing pads and overnight treatments that promote gentle but effective skin renewal. Korean skincare formulations often combine glycolic acid with soothing and hydrating ingredients to minimise irritation while maintaining the skin barrier. It is frequently paired with ingredients such as hyaluronic acid, panthenol, centella asiatica and niacinamide to replenish moisture, calm the skin, and support recovery after exfoliation. With consistent use, glycolic acid-infused products can help brighten dull skin, improve texture, reduce the appearance of fine lines and promote a clearer complexion.