Spirulina platensis, commonly referred to as blue-green algae, is a nutrient-dense cyanobacterium increasingly utilized in cosmetic formulations for its potent antioxidant, anti-inflammatory, and revitalizing effects. Rich in proteins, essential amino acids, carotenoids (such as β-carotene and zeaxanthin), phycocyanin, vitamins (notably B-complex and E), and trace minerals like zinc, selenium, and magnesium, Spirulina serves as a powerhouse for topical skin health. Scientific studies confirm its ability to scavenge free radicals, enhance skin barrier integrity, and support cellular repair. These properties make it an ideal component in anti-aging serums, detoxifying facial masks, and moisturizers targeting dull, damaged, or environmentally stressed skin. The phycocyanin content also plays a role in downregulating oxidative stress markers, supporting smoother and more resilient skin.

In haircare, Spirulina platensis powder supports scalp health and hair structure due to its high protein content and growth-supportive micronutrients such as iron and vitamin B12. Its topical application may help improve follicular oxygenation and reduce inflammation in cases of scalp irritation or sensitivity. Additionally, Spirulina has been explored for its antifungal and antimicrobial properties, aiding in the reduction of dandruff-related symptoms. Formulations such as scalp masks, strengthening shampoos, and volumizing conditioners frequently feature this ingredient to support hair vitality, increase density perception, and maintain a clean and balanced scalp environment.