CAS: 97-59-6 INCI: Allantoin Allantoin is a naturally occurring compound found in several plants, such as comfrey (Symphytum officinale), and is also synthetically produced for various cosmetic and pharmaceutical applications. It is commonly used in the form of a white, odorless, and crystalline powder known as allantoin powder. Here is a description of allantoin powder: Physical Characteristics: * Color: White * Odor: Odorless * Texture: Fine crystalline powder Chemical Composition: * Chemical Formula: C4H6N4O3 * Structure: Allantoin is a diureide of glyoxylic acid with the chemical formula C4H6N4O3. Properties: * Water Solubility: Allantoin is highly soluble in water, making it easy to incorporate into aqueous formulations such as creams, lotions, and gels.