New here, and henna dying question

Hello everyone :) Honestly I'm not even sure if this is the right place to ask about this question, but LHC doesn't seem to be working so I came here.
I've been every color you could possibly think of , bedsides red. About 2 weeks ago I dyed it and I really love the color, however, it had faded almost completely in a week. That was partly my fault, considering I was using dandruff shampoo and scorching hot water. Reading up on it though seems like way too much work, and I want to shy away from nasty chemical dyes.
So I'm thinking of using the Red Raj henna dye sold on hennasooq.com.
Since I'm wanting a vivid red, I'm going to try adding hibiscus powder in it also to boost this.
I've never used henna before so I may have no idea what I'm doing. My hair is already red, but it's faded pretty bad and is really dry and icky feeling. So, would a combination of these things work okay to achieve the color I want?
Here's what it looks like, I'm trying to keep it somewhere around this color.
http://i.imgur.com/Ilw3mHm.jpg?
Thanks :)


Edited by sinistermoo - August 06 2014 at 1:44pm