Now I've done it. After the first application I wasn't too impressed so I tried it one more time today. I'm still not overly impressed. My hair sure is shiny but it doesn't feel fuller and it also seems as if the senna made it a little dry. I've put some jojoba oil on the ends and I will give them the night to soak it all up before I give my last verdict 
Anyway, here's my hair after senna: