I am going to color my future sis-in-laws hair. But she does her own Color usually! I know a big No No! But anyway... her hair is very curly thick, and dark. So has about 5 inches of regrowth and her ends are all highlighted blond that she did her self. I 'm going to dye her hair dark red so I know I need to fill her ends or they'll turn pink. So I apply the Filler to just her ends wash it out then apply the allover color? Any suggestions. I just want a few ideas. THANKS~~

Can you not dye it all over brown and then add the red?

I am going to color my future sis-in-laws hair. But she does her own Color usually! I know a big No No! but anyways...her hair is very curly thick, and dark. so has about 5 inches of regrowth and her ends are all highlighted blond that she did her self. I 'm going to dye her hair dark red so i know i need to fill her ends or they'll turn pink. So I apply the Filler to just her ends wash it out then apply the allover color?? any suggestions. I just want a few ideas. THANKS~~

A color filler adds tint to faded colored treated hair. Once you apply the color filler, let it set for the recommended time and then apply the desired hair color.