The hair that's used in hair pieces take color very quickly.
General "rule" is to color the unit 1 shade [b]lighter[\b] than
your existing hair color.
Also, only leave it in for 15 minutes or so. You'll
have to experiment a little on the time. Remember
that the unit takes up the color very quickly.
Also, if you're starting with a blond colored unit and coloring
it darker, you'll probably only want to use a 10 volume developer.



Fred