Dyes - colour additives for food products and dietary supplements, are dividing into the colourants: organically natural vegetable or animal (carotenoids, chlorophylls, haemoglobin, myoglobin, anthocyanin); nature-identical dyes, differ in the way of obtaining (synthesizing) (beta carotene, riboflavin, canthaxanthin); Synthetic organic dyes (Quinoline Yellow WS, cochineal red, methyl violet) are cheaper, resistant to acid-alkine changes, effects of light and temperature.