The Chi Deep Brilliance Shine Serum is a lightweight, leave-in treatment designed to enhance the natural luminosity of your hair. It provides a high-shine finish without weighing down fine or medium hair types. This versatile serum is ideal for daily use on both dry and damp hair. It helps to smooth the cuticle, control frizz, and add manageability, making styling easier and resulting in a sleek, polished look.