The new ISO 21392 method for the determination of heavy metals in cosmetic products via ICP-MS came into effect. This new method is a key asset as it guides laboratories toward a universal method to determine the most common traces such as chromium, cobalt, arsenic, nickel, cadmium, antimony, and lead in finished cosmetics. The procedure describes the use of microwave digestion in combination with ICP-MS to expedite and simplify cosmetics analyses, whilst ensuring higher quality. Discover the main strengths of the method and the process for an easy implementation.