Phycocyanin as a colorant?

[Hennyfer]

Anyone have any experience using phycocyanin as a colorant? It is the part of the spirulina that gives it it's blue tone. On sale at $10.50 per 14g. How many grams of spirulina would typically be used for this purpose?

 

[Vicki C]

Anyone have any experience using phycocyanin as a colorant? It is the part of the spirulina that gives it it's blue tone. On sale at $10.50 per 14g. How many grams of spirulina would typically be used for this purpose?

Hello! Did you ever try this? I ordered some at a lower price than what you mention and am eager to try, but I wonder if it will turn yellow or brown when it hits the soap.