What it is: A high-performing, weightless serum that instantly reduces frizz and banishes split ends. What it does: This serum instantly reduces frizz and banishes split ends without leaving hair flat or greasy. It's infused with self-adjusting smart silicones that give hair perfectly polished, vibrant results and is formulated with Enzymetherapy®, Color Hold®, and Age-Control Complex® to extend the life of your hair color and combat the aging process. What it is formulated WITHOUT: