by rodman » Wed Aug 25, 2010 12:33 pm
Use products that are specifically for dyed hair. Some are even colour specific so those are really good. You get all different makes and brands and they are all generally good. The harsher the product the more quickly it will strip the colour from your hair. Also use a hair mask after you have washed it to protect the hair and keep the colour vibrant.
In general, red hair dye fades reasonably fast. Thats just how it is, you'll probably find you will want to redye it every couple of months.