Polyhydroxy acid PHA
Gentle exfoliation for sensitive skin
Polyhydroxy acid is the exfoliant that finally works for sensitive skin. Where AHA acids can burn and irritate, this milder acid family provides the same renewing effect with a tolerance profile that makes it suitable even for reactive, rosacea-prone, and sensitive skin. It effectively exfoliates the cell layer without compromising barrier function, leaving the skin smoother and softer without redness or tightness. It's exfoliation's answer to "all the good without the downside." At SKNLÛX, you'll find a carefully selected range from leading K-beauty brands.
Read more about Polyhydroxy Acid
Polyhydroxy acid is a group of exfoliating acids with a larger molecular size than alpha-hydroxy acids, which limits penetration depth and significantly reduces the risk of irritation. The substance dissolves the bonds between dead skin cells in the stratum corneum and facilitates their natural shedding without disrupting barrier function. These acids are also humectant and antioxidant, which fundamentally distinguishes them from more aggressive exfoliants. Gluconolactone and lactobionic acid are the most common forms and have shown anti-aging effects comparable to glycolic acid in studies, but without the associated sensitivity issues. The ingredient is compatible with retinol, niacinamide, and active serums in layered routines and can be used without the photosensitivity that AHA acids can cause. In Korean skincare, it is used in toners, pads, and serums adapted for sensitive and delicate skin. Regular application gradually provides a smoother, clearer, and more refined skin texture without irritation. The combination of exfoliation and humectant properties in the same molecule makes it one of the most well-balanced options for anyone looking to renew the skin's surface without compromising barrier function.
