So i decided to go and dye my hair red, well a light auburn. Because my ends seem to not take color every well and i get hot pots at the top of my head, i purchased a color filler. which is available at Sally's. i used Red Red and heres how you use it.
Color filler:
apply to damp hair about half the bottle. make sure you saturate piece of hair. leave it on for 20 minutes, now it can get messy so make sure you wrap a towel around you and use gloves.
After the 20 minutes apply the color you want, DO NOT rinse out the Color filler just add the dye right on top of if. follow the box instructions.
your red will come out beautifully, and what is left can be used periodically, as the color starts to fade.