There's no limit to what you can do with Shades EQ! As the #1 long-lasting, no-lift, non-ammonia, demi-permanent haircolor in the U.S., Shades EQ is one of the most versatile haircolor brand. It provides healthy, shiny results, incredible conditioning with an amazing number of mixing possibilities 03RB- MAHOGANY:Dark Mahogany Brown Creates a dark rich mahogany tone on medium to dark brown hair. Base: Brown/Red.