Put about a 1/2 inch of borax in the bottom of an old shampoo bottle. Add warm water and shake. Then you just squirt a bit on your hair. It doesn't lather but feels kind of slippery so you know where it is. Rinse it out with 1\4 tsp -1\2 tsp citric acid in a glass of warm water. Then rinse out the citric acid .
Take care,
Lisa
Ps. You can wash your dishes with this same mixture but you won't need the rinse.