Posey -
I hear you! I'm so sorry you are going through a rough time.
When I get agitated and frustrated, my husband tells me to just take it one day at a time, and it makes me feel a little better. It's great that you found something that really works! Get your scalp back! It's yours!
I found a store that sells the 2.5% Benzoyl Peroxide here:
Acne Products
They have a 16 oz version. I'm not sure if this helps you or not. I heard that it works just as well as the 10%, but its alot less harsh on the skin. Also, have you tried the Indian Healing clay? Mmarsha and Kammy seem to be seeing good results. I am waiting on mine .. hopefully it comes soon.