Microalgae have attracted great attention as natural compound producers. Cosmeceutical industry represents the field with more interest for the marine sources and compounds. Tetraselmis suecica is a marine microalga rich in tocopherols, carotenoids, chlorophyll, and. In my previous study, I have investigated the potential cosmeceutical application of this species, characterizing the pigment content of ethanol/water extract of T. suecica. Moreover, I have analysed the protective effect of this extract against oxidative damage, demonstrating that T. suecica possesses a strong antioxidant and cell repairing activity on human lung cells. This total extract targets the dehydrocholesterol reductase-24 and prostaglandin reductase 2 genes and reduces the levels of prostaglandin E2 (patent pending). With this project, I intend to investigate the variation of bioactive pigments and biological activity along the growth curve of the T. suecica (HCMR). Moreover, I would perform more in deep study using explanted human tissues for the analysis of antioxidant, repairing, antiinflammatory and regenerative properties of T. suecica extracts.