- Lipstick: Trace amounts of lead have been a subject of concern and regulatory limits in some lipsticks. Lead can be present as a contaminant in color additives. - Soft drinks: Brominated Vegetable Oils (BVOs) have been used as an emulsifier in some citrus-flavored soft drinks to keep flavor oils suspended. While the use has declined and is banned in some regions, it has been a common ingredient. - Chinese fast food: Monosodium glutamate (MSG) is a widely used flavour enhancer derived from glutamic acid. It is commonly used in many processed foods and cuisines, including Chinese fast food, to enhance savoury taste.