The US Food and Drug Administration (FDA) has approved three natural food dyes in an attempt to phase out synthetic dyes from foods across America. The list includes galdiera extract blue, butterfly tea flower extract and calcium phosphate. "FDA staff have been moving quickly to expedite the publication of these decisions, underscoring our serious intent to transition away from petroleum-based dyes in the food supply and provide new colours from natural sources," FDA commissioner Dr Martin Makary said in a statement. Several high-profile brands, including Pepsico and Tyson Foods, have announced synthetic dye removal plans from their products in recent weeks.What Do We Know About The Approved Natural Dyes?Galdiera Extract BlueGaldiera extract blue, derived from the cyanobacteria Galdieria sulphuraria, is primarily used in the food and beverage industry as a natural blue colouring agent. It is a plant-based, nutrient-rich pigment that is considered a safer and more sustainable alternative to synthetic dyes. Additionally, it is utilised in nutraceuticals and cosmetics for its antioxidant properties and vivid hue, making it a versatile ingredient in health-focused and eco-friendly products.Butterfly Pea Flower ExtractButterfly pea flower extract, obtained from the petals of the Clitoria ternatea plant, is widely used as a natural colourant in foods, beverages, and herbal teas. Known for its vibrant blue hue that changes to purple when acidic substances are added, it is also rich in antioxidants and has gained popularity in skincare products for its purported anti-ageing and anti-inflammatory benefits. Additionally, it is used in traditional medicine to enhance cognitive function and reduce stress.Calcium PhosphateCalcium phosphate is a common mineral compound extensively used in the food, pharmaceutical, and dental care industries. In foods, it functions as a nutritional supplement, stabiliser, and leavening agent, while in pharmaceuticals, it is used in calcium supplements and antacids. In dental care, it is a key component in toothpaste and dental fillings to help remineralize enamel and prevent tooth decay.Calls For Complete Elimination Of Synthetic DyesPublic health advocates have called for the complete elimination of certain synthetic dyes in foods, citing scientific research linking consumption of dyes to diseases and neurological issues like hyperactivity and behavioural problems. Moreover, there is a social reason also behind this boycott, with advocates stating that bright colours make unhealthy food look attractive to children. FDA Commissioner Dr Marty Makary stated that American children have long been "living in a toxic soup of synthetic chemicals" and stressed the importance of cleaner food labels.Here is a list of food dyes that are banned by US health authoritiesThe health authorities in the US are banning at least six food dyes by the end of this year. The list incorporates FD&C Green No. 3, FD&C Red No. 40, FD&C Yellow No. 5, FD&C Yellow No. 6, FD&C Blue No. 1, and FD&C Blue No. 2, according to a press release by the FDA.