Glycolic acid (hydroacetic acid or hydroxyacetic acid); chemical formula C2H4O3 (also written as HOCH2CO2H), is the smallest α-hydroxy acid (AHA). This colorless, odorless, and hygroscopic crystalline solid is highly soluble in water. Glycolic acid 99% crystals reagent is a highly pure form of glycolic acid that is commonly used in various industries, including cosmetics, pharmaceuticals, and chemical manufacturing. This product is known for its ability to exfoliate and improve skin texture, making it a popular ingredient in skincare products. Additionally, it is used in the production of various chemicals, such as polymers and esters, and as a pH adjuster in various formulations. Its high purity and effectiveness make it a valuable tool in many applications.