Lumine Oceano is a marine-based anti-aging cosmeceutical using fucoidan from brown algae encapsulated in a marinosome nanocarrier of krill lipids and cetyl alcohol. The optimized 5:5 formulation showed 93.54% encapsulation, 173 nm size, and −29.16 mV zeta potential, enhancing stability, bioavailability, and skin permeation. It improved antioxidant activity by 27% and inhibited collagenase, elastase, and hyaluronidase, demonstrating potent anti-aging efficacy.