Satin Oxide Cover GreySatin gel developers are silicone enhanced to provide optimal shine and conditioning during any chemical service. They mix up with Satin color into a rich creamy-gel consistency for easy spreadability and a stay put application. The silicone base in the Satin developers provide a color protecting barrier on the hair fiber resulting in a much longer retention of color. The end result is silky shiny long lasting hair color. Satin Oxide Cover Grey