Citric acid monohydrate E330 is a white crystalline substance with a sour taste, a food supplement useful in that it acts as a natural and effective antioxidant, it is highly soluble in water and ethyl alcohol. Citric acid is widely used in the food industry as a flavoring agent, in drinks, wines, acidified fruit products, fish products, canned vegetables, mayonnaise, ice cream, desserts, salads, food concentrates, as an auxiliary substance in blanching vegetables and fruits, as well as in the processing of fresh fish and in the production of fats. Citric acid is used in chintz printing, in medicine; citric acid has occupied a certain niche in cosmetics. Added as an antioxidant to shampoos, masks, bath foam, gels, hair sprays. Lotions and face creams containing this acid prevent early aging, make the skin youthful, smooth and velvety. Citric acid is also used in the technical industry, used to remove rust and scale from metal surfaces.