CAS 96-82-2 Cosmetic-grade lactobionic acid is a polyhydroxy acid (PHA) derived from lactose, making it a natural and gentle ingredient in skin care formulas. Its molecular structure allows it to provide exfoliating and moisturizing benefits without causing irritation, making it suitable for all skin types, including sensitive skin. This makes it ideal for formulators seeking to create products that meet a wide range of consumer needs.