Phycocyanin and chlorophyll are naturally occurring pigments that contribute to spirulina's distinctive colour and are part of its nutrient profile. Phycocyanin is the blue pigment that gives spirulina its blue-green hue. Chlorophyll is the green pigment found in many plants and algae. In the context of this product, they are components of the whole algae and contribute to its overall nutritional character.
These pigments are why spirulina is often described as having a dense nutrient profile. They are not isolated extracts in this powder; you are consuming the whole algae milled into powder form. As with any food, the body utilizes the various compounds present as part of digestion. The product is a source of these compounds, which people may choose as part of a varied, plant-inclusive diet. No specific benefits are claimed for these individual components.