cassia obovata (AmandaPanda?)

I'm sorry I am just getting your message now, I haven't been checking here often.

I used cassia several times in the past. It's a lot like henna, only cassia is colorless and it doesn't last as long. How long it lasts would depend on the shampoo you use and how often you wash your hair, but I'd say a few weeks probably.
It's supposed to add shine and strength (like a protein treatment).

I mixed it with water until it's the same consistency as pancake batter, then I applied it to my hair in sections. I left it in for at least an hour. As with other protein treatments, you'll want to use a very moisturizing conditioner after rinsing the cassia out. You'll have to rinse a lot to make sure you get all of it out. It would be a good idea to dunk your hair in a bucket to help get most of it out first, so you're not wasting water or clogging your drain.

I stopped using it because it seemed like too much for my hair. My hair just doesn't need that.

I hope this helps

I'd like to point you to this thread: http://forums.longhaircommunity.com/showthread.php?t=406

My hair seemed more tangly afterward, but it could be due to either not rinsing enough or not using a conditioner that was moisturizing enough