Ammonium Lauryl Sulfate (ALS) is a surfactant commonly used in personal care products like shampoos, body washes, and toothpaste. It helps create foam and lather, making it easier to spread the product and clean surfaces. ALS is derived from natural sources, such as coconut or palm oil, and is known for its ability to break down oils and dirt. While effective in cleansing, some people may experience skin irritation or sensitivity to ALS. As a result, many brands offer sulfate-free alternatives for those with sensitive skin. Overall, ALS plays a significant role in the formulation of many everyday hygiene products.