20 Mar 2023 --- A study inspecting heavy metal impurities of antimony, arsenic, cadmium, lead and mercury in cosmetic products has been carried out by the UK national regulator, Office for Product Safety & Standards (OPSS), in hopes of setting up business guidelines. Ninety-one products were examined, such as lipstick, lip gloss, lip liner, toothpaste, mouthwash, sunscreen, foundation, mascara, eyeliner and eye shadow.