Astaxanthin from Haematococcus pluvialis is a highly potent, esterified carotenoid antioxidant—20–50× stronger than synthetic forms—offering exceptional stability, bioavailability, and broad health benefits. Clinically proven to protect cardiovascular, ocular, muscular, and skin health, it reduces oxidative stress, inflammation, and UV-induced damage while supporting endurance, cognitive function, and metabolic balance. Produced sustainably in closed systems, it is vegan, contaminant-free, and suitable for diverse applications from nutraceuticals to advanced cosmetics.