This article is from the Kool-Aid FAQ, by Paul and Bess Dawson-Schmidt email@example.com with numerous contributions by others.
In a large bowl (a little bigger than your head) put in hot water
and Kool-Aid. The longer your hair the more packets you need:
for shoulder length try 3.
Dunk your head in the bowl, and with a cup and a friend work on
pouring the K.A. all through your hair.
Once it is totally covered and saturated squeeze out the excess
and blow dry.
Let it sit on your hair for a day. (Beware: it can be VERY
messy, and during the day it is on your hair it might smear on
your clothes....be careful! Bleach seems to take the stain of
off hands and counter tops.)
-by Jodie Zwart