Black Tea rinse?

I went to the dollar store and stocked up on English breakfast black tea. I what to keep the fullness in my hair and if that means I have to decrease shedding to do it so be it. I have made my first brew and I will let it steep for 24 to 48 hours before I use it in my hair. I plan on applying it with a spray bottle on damp hair and than conditioning over it and applying a plastic cap.

This process will happen once a week for 8 weeks, I only have 40 bags.