This effect is achieved due to the content of a large amount of vegetable protein (vegetarians, keep in mind), vitamins of groups A, B, C, and D, as well as phosphorus, potassium
Interesting fact: spirulina has evolved for a very long time so that we, humanity, could enjoy it. The approximate age of spirulina as a species is 3.5 billion years, meaning it existed on our planet as early as the Mesozoic era.