Iscaguard PEG is a broad-spectrum preservative used in personal care and cosmetic products to prevent microbial growth and extend shelf life. It is a water-soluble derivative of caprylyl glycol and provides effective protection against bacteria, yeast, and mold. Often found in products like lotions, creams, shampoos, and facial cleansers, Iscaguard PEG helps maintain the safety and quality of formulations without the need for harsh chemicals. It is also known for its moisturizing and skin-conditioning properties.