of cocamidopropyl betaine making it hostile to microbial growth, thus eliminating the need for a preservative. It contains approximately 2% of a biodegradable chelate that imparts enhanced hostility to microbial growth, and makes it ideal for EDTA-free formulations. According to the company’s in-house foam studies, Mackam 50-UL produces higher initial foam and more stable foam than other available product in medium hardness water. The product contains a low level of free amidoamine, which means a milder, lower sensitizing product. Mackam 50-UL also has ultra low levels of free fatty acid. More info: (800) 521-0065; Website: www.dewolfchem.com.