Microalgae Bioactive Compounds to Topical Applications Products—A Review

Microalgae are complex photosynthetic organisms found in marine and freshwater envi-ronments that produce valuable metabolites. Microalgae-derived metabolites have gained remark-able attention in different industrial biotechnological processes and pharmaceutical and cosmetic industries due to their multiple properties, including antioxidant, anti-aging, anti-cancer, phycoim-munomodulatory, anti-inflammatory, and antimicrobial activities. These properties are recognized as promising components for state-of-the-art cosmetics and cosmeceutical formulations. Efforts are being made to develop natural, non-toxic, and environmentally friendly products that replace synthetic products. This review summarizes some potential cosmeceutical applications of microalgae-derived biomolecules, their mechanisms of action, and extraction methods.