gorgeous haircut!! when i had red hair, i used this color depositing shampoo from Artec by Loreal. it helped keep the color much longer. it's a little difficult to find because it's usually available only at professional beauty supply stores. you could also try John Frieda Brilliant Brunette Shampoos and Conditioners. I've only tried it once but it made my hair incredibly bright and shiny! hth! =D