What it is
Spirulina maxima extract is derived from a cyanobacterium rich in proteins, peptides, vitamins, and pigments such as phycocyanin and carotenoids. In formulations it is used to condition the skin and to provide antioxidant support, and it can contribute a characteristic blue-green tint at higher concentrations. It is typically included at low levels as a botanical or marine-style active rather than as a structural ingredient.
Safety & warnings
Generally well tolerated in topical cosmetic use at the low levels typically employed. As a protein- and pigment-rich botanical extract, sensitization is possible in predisposed individuals, and quality depends on cultivation conditions and freedom from contaminants. It is not an oil and is not considered comedogenic.
Origin & sourcing
Naturally sourced, obtained by cultivating and extracting the microalga Spirulina maxima, usually in water or aqueous-glycol systems.
Questions everyone asks
What is spirulina maxima extract used for in sunscreens?
It is added as a skin-conditioning and antioxidant-supporting botanical, contributing nutrients and pigments rather than acting as a UV filter.
Does spirulina extract provide sun protection?
No. It is not a UV filter and does not provide measurable sun protection; that role belongs to the dedicated filters in the formula.