- Lightweight oil for all hair types with Keratin and Tamanu. Goldwell Kerasilk Color Brilliance Perfector smoothes the surface of the hair, provides extraordinary shine and prolongs colour brilliance. Shields from UV radiation. Prolong the shine in your hair with the Kerasilk Color Brilliance Perfector Oil. A perfector oil that is designed to protect the hair from pollutants while keeping the hair shiny and sleek. Lightweight and smooths the hairs surface for a glossifying finish. Provides 72 hour UV protection and is lightweight, making it great for all hair types.