This is a glycolic acid toner designed for rough, dull, pore-clogged and comedone-prone skin. It uses a gentle concentration of glycolic acid to gently promote surface keratin metabolism, helping dead skin cells shed naturally and reducing roughness, dullness and enlarged pores caused by keratin buildup. Glycolic acid has smaller molecules, which can better penetrate the skin surface to brighten and soften the skin, making subsequent skincare products easier to absorb. The formula can be compounded with sodium hyaluronate, panthenol, glycerin and soothing plant extracts to hydrate and moisturize while exfoliating, reducing dryness, tightness and irritation and improving skin tolerance. The texture is usually fresh and watery, non-sticky, and can be applied by wiping with a cotton pad or patting gently with palms to help remove residual oil and dead skin cells after cleansing. It is recommended to start with low frequency, 2-3 times a week, avoid the eye and lip areas, and follow with moisturizer and sunscreen. Long-term use can make the skin smoother, cleaner and brighter, improving blackheads, closed comedones and rough texture.