This invention refers to a re-activant of the colour of tuna formed by mixing various components and water, designed to recover the natural colour of packed tuna. It likewise includes the procedure by which the product is obtained, which is composed of a powder mixture to be mixed with water in a proportion of 4 Kg. of mixture for every 50 litres of water, using proportional measures to obtain different amounts, being characterised by the fact that the composition of the powder mixture includes a mixture of various plant extracts.
