Spirulina Extract ( Phycocyanin ) is a natural blue extracted from spirulina. It is a water-soluble pigment, non-toxic, pure, lovely clear. Not only bright colors, but in itslf is a nutritious protein, amino acid composition range, high content of essential amino acids. It can improve immunity, keep full vitality,enrich the blood, anti-oxidation, anti-tumor, resist radiation, strengthen metabolism, discharge toxin,etc. So, it is vividly called 'food diamond' by food experts. Popular uesd in food coloring, health products, medicines and cosmetics. It is a colour food ingredient permitted by the European Union. And it is the only edible natural blue pigment approved by.