What are class 3 preservatives?

Class 3 preservatives refer to a category of food preservatives that are generally considered less safe than Class 1 and Class 2 preservatives. They may carry a higher risk of causing adverse effects or allergic reactions in some individuals. Examples include certain artificial colors and additives that can be controversial due to potential health concerns. Regulatory bodies often scrutinize these preservatives, and their use may be restricted in various countries.