Ingredient GlossaryDiscover more about these powerhouse ingredients behind the Estée Lauder formulas you love.Filter By: ALL A-C D-G H-M N-R S-Z Discover Ingredient Glossary Hydrolyzed Yeast Protein Hydrolyzed Yeast ProteinSupports a "longevity" protein naturally found within skin to help skin look and act younger for longer. Naturally Derived* Featured In*Per the ISO standard. From plants, non-petroleum minerals or water.