*UPDATE (May 14, 2013): I noticed that the hair dye washed off. My hair color turned back to the previous color. I take back what I said. Most probably, I won't use this hair dye again. It's not worth it. The hair dye fades less than four weeks.
I started to dye my hair last summer 2012. I've used Revlon Colorsilk in Light Auburn, Medium Auburn, Dark Auburn and Medium Ash Brown. I dye my hair almost every 3 months. I haven't tried using other hair dye brands like loreal (it's pricey compare to Revlon) and Garnier (not sure about the quality hehe) hahaha and Revlon hair dye has given me great results so far. My favorite out of all the colors I've tried is Medium Auburn. The color suited me best- or at least imo.