The presentation covers trends in the use of marine ingredients in anti-aging cosmetics from a cosmetology and chemistry perspective. It begins with an introduction to CIIMAR (Interdisciplinary Centre of Marine and Environmental Research) and its work in marine research. It tracks current trends in cosmetic ingredients, focusing on species of interest. Special attention is given to macroalgae, highlighting key molecules like beta-carotenoids and fucoidan from red and green algae. The presentation also explores microalgae-derived compounds and their emerging role in anti-aging formulations.