Spirulina belongs to Cyanophyta, Cyanophyta, Algae, Trematodaceae and Spirulina.

Spirulina platensis and Spirulina maxima are the best varieties of Spirulina.

In addition, Spirulina belongs to the colorless body of cyanobacteria cells, and the pigment is distributed in the pigment area outside the protoplast, which is blue-green.

So it will fade, which is normal.